DIY - Do It Yourself, Fixing Stuff, Health

Waging War On Mosquitoes – Got a My4Sons Sprayer To Apply Talstar Pro Insecticide!!

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We’ve had a crazy amount of rain this year in Southwest Michigan. It seems we can’t go more than a day or two without rain. The photo at the top of our yard shows how everything is a lush green plus it shows the standing water that won’t go down because everything is so water logged due to all of the rain. We have friends and family complaining about the huge amount mosquitoes that are attacking them as a result – we don’t have that problem. I declared war on mosquitoes last year and upped my attack plan even further this year.

The ground is so wet and soft that my tractor got stuck and I had to pull it out. It’s sldo so wet that the mosquito population has just exploded and folks are saying that ticks are booming as well.

Last year, we started using Talstar Pro insecticide sprayed from an 18 volt two gallon Ryobi sprayer and I wrote a blog post about it because I was so happy with the results. It took me four batches (8 gallons in other words) of spray with 1 oz of Talstar per gallon to get control. It also took over an hour to apply. It definitely did the job but it took a long time and my arm ached from holding all the Ryobi sprayer unit as I walked around.

To be honest, the Ryobi far exceeded my expectations it was just too small, didn’t spray as far as I would like and holding it was killing my elbow, shoulder and back. I decided in April to buy a better sprayer and started researching on the Internet and reading reviews on Amazon. I happened across a vendor on Amazon called “My 4 Sons”, their features looked great and they got very good reviews so I decided to order one.

My 4 Sons Sprayers

First off, they really are a family owned business started by Lance and Lisa Ensign in 1998. Yes, they do have four sons. At any rate, they started with carpet cleaning and eventually branched into battery powered sprayers. I’m no expert but I think they fill a middle niche between little light use sprayers and the big dedicated units that you pull by a tractor or ATV.

It Arrived

In typical Amazon fashion, the unit showed up a few days later in a big box. What surprised me were parts everywhere and very limited instructions. The guide said to call Lance and listed his number. I left a message and he called me back a short while later and I got everything squared away. He and I then exchanged a few text messages also and they replaced a couple of accessory parts no hassle at all.

Here’s the tank, charger and caddy fresh out of the box. Some of the parts were in the tank to save space.
It just slides in and is retained by a velcro strap then there is a door that snaps in place to seal it.
Here’s the battery.
the battery has terminals on the top and simply slides into the compartment and makes contact at the end. A velcro strap allows you to snugly keep the battery in place.
Here’s the assembled unit with everything attached – the backpack straps and the extended hose. I removed the backpack straps shortly after.
Here’s how it looks now with just the tank assembly, extended hose, wand and caddy. Note how I had to tie the top bungee strap. I need to go over uneven ground and the tank can tumble off the caddy if the bungee can stretch too much. I’ll probably replace the bungee straps with just plain straps at some point. What you see above works for now – I just am not a huge fan of the looks.

Mosquito Control Results

When the mosquitoes first started this Spring, it was brutal. We were getting crazy amounts of rain and even at 1.5oz of Talstar per gallon of water and weekly applications, we couldn’t stay on top of them. I’m pretty sure the Talstar was getting washed off. Normally, Talstar is really good about leaving a residue that kills the mosquitoes but not when it is getting poured on almost every day. I tried to time my re-applications with at least one following dry day and the more the better. I like to apply at dusk when the mosquitoes are active by the way.

The sprayer and adjustable tipped wand worked wonders. With the My 4 Sons system I could really reach out with the spray -maybe 20-30 feet depending on how I adjusted the jet. Plus I could open up the spray and broadly apply it to the underbrush, leaves, grass by the house, bushes, eaves and so forth.

Instead of just 8 gallons, I’m applying about 12 and it takes me about 30-45 minutes to do so. This is because of the bigger tank and that I can spray a higher volume with the new system.

I’d say it took about three weeks to get on top of things and now I am spraying the normal 1 oz per gallon of water about every 4 weeks. We’ve just made it through one of these normal cycles and will spray again near the end of June – so we have another week to go as of my writing this and the mosquitoes are under control.

The Bottom Line

We can go outside safely now but we do hear of folks fighting tons of mosquitoes. I recommend Talstar Pro to anyone who will listen. If you have small urban property, you can start with a pump sprayer and move up from there.

Note, we have dogs and treat them for fleas and ticks. I hate ticks but they don’t bother me much unless I am in the woods. Talstar Pro is great if you need to get rid of ticks and a variety of other insects as well – read the label below.

I’d guess I’ve applied about four batches with the My 4 Sons unit now and am very happy with it. If you need a bigger sprayer for whatever it is that you are doing, I definitely recommend them.

Here are some links on Talstar P Pro if you want to learn more:

PS – The 18 volt Ryobi Sprayer is still going strong even after a ton of use last year and is now being used to hose down plants with fungicide. Since stuff isn’t drying out, we are seeing a lot of fungus development on our roses and vegetables. I’m experimenting between Immunox (which is not impressing me) and Daconil for fungus control. Point being for people with smaller areas, the little Ryobi is still a solid choice.

5/21/23 Update: My older sprayer is still working great. They have a new model that should be just as good or even better. Also, you are better off buying Talstar P Pro from eBay. Amazon has stopped carrying it or allowing sellers to list it.

2/25/20 Update: The My4Sons sprayer worked fine all last year. One of the wheels fell of the cart and they promptly sent me a replacement. I poured out all of the remaining liquid and ensured the pump was empty going into the winter. I’ll definitely be using the unit again this year.

May 2, 2020 Update: If you are having trouble finding the sprayer or Talstar P Pro – read this blog post.

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AK & Related Rifles, Yugoslavia

Changed my Yugo M76 Scope Mount To An American Defense AD-RECON-SL and It’s Rock Solid!!

When I was adding the big Vortex Hog Hunter scope to my M76 with RS Regulate side mount optics rail, all I had to prototype with were UTG rings. While the UTG rings aren’t too bad, I have stopped using them with centerfire rifles because they have a rounded screw that passes through the Picatinny rail rail slot. It’s rounded shape and only partially filling the slot risks damaging the rail and the zero shifting because the ring(s) can move.

These are the UTG low profile rings. Note how the screw is round and not rectangular? Also, after 30 rounds of 8mm Mauser firing, the rear flip lever rattled loose.

What is really needed is a quality ring or scope mount that uses a bar that properly fits into the Picatinny Rail slots and locks the optic securely and consistently into position. American Defense mounts are that way and they have an excellent locking lever.

I started using American Defense mounts for my Vortex Crossfire Red Dot optics a little over a year ago and was very satisfied with them and very impressed by their quick release lever design. So, when I needed a new mount for my M76 that was strong enough to hold the big Vortex Hog Hunter scope on my M76 and would clear rear sight block but also be close to the bore, the American Defense AD-RECON-SL immediately came to mind.

American Defense AD-RECON-SL

American Defense started with their QD Auto Lock System – the quick release lever system they developed. – and have branched into a variety of offerings from there including scope, bipod, light, laser and other mounts. In short, they are capitalizing on their really rugged QD levers.

So, the first thing I did was to measure the UTG mount from the top of the rail to the optic center, which I used the top of the lower half ring. That measure came to about 0.975″ and I knew any mount I bought had to be at least that or bigger. The front objective was all but touching the gas tube cover with those UTG low rings.

The AD Recon series has a variety of heights and offsets to select from and they publish specs for you to make an informed decision. In my case, because the RS!Regulate side mount already has front-to-back adjustment, I didn’t feel that I needed any offset but I did want to find as low of a scope mount as I could.

In looking at the specs, the AD-RECON-SL seemed to fit the bill. It had no offset and was their lowest mount with a 1.110″ center for scope with a 30mm tube. it was a tad higher but the slightly higher 0.135″ difference really didn’t worry me so I went ahead an ordered one.

Folks, the AD-RECON-SL did not disappoint. It is really a gorgeous piece of engineering. The fitment is excellent and is finished in a black hard coat. Here are some photos:

Here’s the side of the unit with the adjustment nuts. I love the flag on the side.
Here it is with their patented QD levers. The small lever you see in the middle of the bigger lever is the locking mechanism that keeps the unit secure. The moment you flip those rings you know your dealing with quality.
See how American Defense uses bars to lock the mount into the Picatinny rail? This is the way to go. It makes for a very secure and consistent engagement meaning your optic’s zero will not shift and the rail will not get damaged over time under heavy recoil with a simple round screw.
Yeah… that’s the American Defense unit on the left and the little UTG ring on the right. I would have no hesitation recommending the UTG rings for a rimfire or light recoil applications but not for something where there is significant recoil and a heavy optic combined.
Here’s another angle.

But Why Have QD Rings on a RS Regulate Mount?

I do need to explain this. I can bet that I will need to take the dust cover off for some reason and don’t want to rely on tools. If I am hunting, I may not have any tools with me and need to clear a jam or something. That means I need a way to remove the scope and rail to get access to the dust cover.

The RS Regulate’s lower rail does have a quick take down lever that solidly clamps on the M76 rail. That is not the issue and may make you wonder I need another quick release system. The challenge is that the Hog Hunter scope has a giant 56mm front objective for gathering as much light as possible in low-light situations such as dusk. It will hit the M76’s rear sight block if pulled straight back when mounted as low as I want. The solution is to use the AD-RECON-SL optic mount to enable me to lift the scope off the RS Regulate’s top rail and then I can slide the RS Regulate assembly off. The combination definitely works.

Installation

Taking the mount apart was easy – remove the four screws on each ring. I was pleasantly surprised that they used a precision pin to guide the rings into position and not just the screws. Again, this makes it stronger and more consistent.

Here’s a close up of the base. The middle hole is for the guide pin and the outer holes are for the screws.
Here you can see the four halves of the rings. The half to the top left with the guide pin. Its counterpart is already installed in the back.
An important design aspect to note is that the halves are not symmerical from top to bottom. The side with the pin is a no-brainer – that goes in the base. The other two halves without pins need to have the thinner section at the bottom for the pieces to mate up correctly. You can see in the top left half that the bottom part with the alignment pin is not as tall as the top. The lower-right is also a good angle for you to see the thinner bottom relative to the top.

There is an installation detail that you may not guess and they detail it in their installation instructions – you install the bottom screws first and tighten them down to the 20-25 in/lbs torque spec first. For folks not used to working with small fasteners, please note that is inch pounds and not foot pounds).

The bottom is torqued down first and then the top. There will be a small gap at the top. This method of bottom then top torquing centers the optic in their design. The only thread locker they will recommend is VC-3 Vibra-tite and the use of anything else will void the warranty. I’ve used a lot of Vibra-tite with Kydex holsters – it’s interesting in that you clean the fastener, apply the VC-3, let it dry and then assemble. It creates a rubbery surface that pretty much negates vibration. It also stays put when you unscrew and reinstall screws. It’s interesting stuff. They include a small packet of it with the mount but I also keep it around for working with Kydex fasteners and other situations where I expect there will be a need to uninstall and reinstall or adjust screws.

Here’s the M76 rifle with the American Defense mount installed. Note I used my Vortex torquing screwdriver to do the installation. It’s definitely a precision instrument and what I use for all optics work now. I take care to return it to zero after each use.
Here it is from another angle.
I changed cheek pieces to get a better cheek weld. This unit is nice and stable. I’m so-so about the cheek pad itself and wish it was a bit wider but it is better than the Voodoo cheek pad that was there. I’m still hunting for an even better cheek weld and have some options I want to try that I will report on at a later date after I have a chance to try them. To be clear- it is a solid cheek piece and the right height but personally I do not like the feel of that relatively narrow riser.

In Summary

The combination of the RS Regulate side mount system and the AD-RECON-SL optic mount is absolutely rock solid as in zero flex at all. even with the big and heavy Vortex Hog Hunter scope. I really think I have the ideal optic solution now for the rifle. The length of pull is better thanks to the installation of a SVL slip-on Limbsaver pad. I still need to find a better cheek piece to get my eye just the way I want it comfortably behind the scope and have some options to try. Last thing to report is that I did do some work on the firing pin but haven’t had time to test the rifle again.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

AK & Related Rifles, Yugoslavia

Add Length of Pull to a Yugo M70, M72 or M76 Wood Buttstock WIth A Limbsaver Recoil Pad

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Normally, I like the length of the Yugo M70 and M72 buttstocks. They’re shorter than many Western fixed stock designs but I’ve just grown accustomed to the length of pull (LOP). Recently, I had Two Rivers Arms build me a M76 designated marksman’s rifle (DMR) and found the stock to be a tad shorter than what I wanted to get in position behind the big Vortex Hog Hunter scope I had bought for it.

Two Rivers Arms custom built Yugo M76 rifle with a RS!Regulate scope mount and Vortex Hog Hunter scope. The UTG rings have been replaced with an American Defense mount and the cheek piece will be replaced but you can get an idea that this is a big rifle and a big optic.

I realized that to make the LOP longer, I had two options. My normal route with an AK is to install a stock adapter and either go to some form of modular stock. In the case of the M76, I really wanted to stick with the original wood. The brought be to my second option – to add a recoil pad.

There are a ton of recoil pads on the market but as far as I know, nobody makes a direct replacement recoil pad for the Yugo military rifles other than me and my pad is a copy of the original. This gives you two options also – either cut the stock and install a “grind to fit” pad that would ruin the original stock or to go with a slip on pad.

Slip on recoil pads are designed to fit a certain range of buttstock sizes based on the height and width. They may not be the best looking of options but they get the job done and don’t require any modifications to the underlying stock — plus for folks who don’t like messing with tools – they can be slid on and off usually very easily.

End of Buttstock Size for Yugo M70B1, M72B1, and M76 Rifles

Zastava made the Yugo rifles but is now in Serbia and makes both commercial and military rifles. The dimensions I am about to give so you can get the proper pad only apply to he military rifles. If you have a Zastava N-PAP for example, your stock is much smaller and I don’t know the dimensions.

If you do have a military sized Yugo M70B1, M72B1 or M76 then the following should sizes should be approximately right:

  • Top to bottom of the buttstock overall: 4.48″ so just under 4-1/2″
  • Left to right at the widest point: 1.29″ so just under 1-1/3″

So that means a slip on buttpad needs to accomodate those dimensions and will slide right over the original recoil pad as well.

Limbsaver by Sims Vibration Labs

Years ago, I happened across Limbsaver recoil pads and started using them more than Pachmayr, which is another leading brand. I’ve had very good luck with Limbsaver so they were my go-to when it came to the M76.

They have a new Air-Tech series that adds 1″ to the LOP and is also remarkably spongy to absorb the recoil. The M76 really doesn’t have a ton of recoil so my decision was more based on the 1″ LOP.

The AirTech slip on pad comes in four sizes:

  • “Small” fits stocks measuring 4-1/2 x 1-1/2 inches to 4-13/16 x 1-5/8 inches
  • “Small/Medium” fits stocks measuring 4-5/8 x 1-9/16 inches to 5-1/8 x 1-3/4 inches
  • “Medium” fits stocks measuring 4-13/16 x 1-5/8 inches to 5-1/8″ x 1-3/4 inches
  • “Large” fits stocks measuring 5-1/8 x 1-3/4 inches to 5-3/8 x 1-7/8 inches

Given those dimensions, I opted to buy the “small” size and it fit beautifully. [Amazon has all four sizes – click here to see them]

The small-sized pad slid right on and fits nice and snug.

I actually wish they had a pad that added about 1/2-3/4″ of pull as that would be perfect. The end result is just a tad longer than what I would dial in with an adjustable Magpul PRS stock but it definitely feels better when I start lining up behind the scope. It’s staying on the rifle!

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

AK & Related Rifles, Russia and also USSR

Yes, There Is A Published Specification for the AKM Fire Control Group Pins

I had a fellow who was new to AK-47s/AKMs ask me the other day how the two pins work and if there was a published specification for them because his were floating in their holes. I learned a long time ago to try and help guys learn so I took a few photos and sent them to him.

Two Pins for Semi-Auto AKs

In a fully automatic AK, there are three pins and they are referred to collectively as the fire control group (FCG) pins – this includes the hammer pin, trigger pin, and sear pin – once in a while you’ll see the word “axis” thrown in there somewhere. For most civilians, we’ll just see semi-auto AKs so there are just two pins – one for the hammer and one for the trigger assembly which is made up of the trigger and disconnector. They are still called the FCG pins.

For anyone that is interested, a 1968 Soviet era armorer’s manual does have the pin specification:

This is from a Soviet era Armorer’s Guide that specs out the AKM fire control group pin. The shaft is 5mm and is where the trigger and hammer rotate. The same type of pin is used for both the trigger and the hammer – they are not unique.
Here is a pile of pins from a mix of countries. I had them in one of my parts boxes. The diameters of the shafts vary from 4.921 to 4.988mm according to my micrometer. Based on the armorer diagram above, a diameter under 4.97 or over 5.03mm is out of spec. Three of those pins were under 4.97 interestingly enough.

Odds are that the heat treat is messed up on his receiver or someone drilled the holes out of spec. He has enough info now to decide his next steps and since I wrote most of this already, I decided to post it in case it helps someone else.

Accessing the 1968 AKM Armorer’s Manual

I am going to try hosting his huge armorer’s manual PDF file and see how it goes. If people have problems downloading it, I’ll just remove the link – click here for the 64MB PDF file. Note, I am not the owner or creator of that file. Someone did us a huge favor by taking the time to scan in all the pages and share it. It is in Russian and has a ton of diagrams.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

Self and Home Defense

Use Wired and Solar Lights To Improve Home Security

Defending your home and family takes some thought. In general. the more layers of defense you add, the lower your risk is. For example, lights, security alarm, security cameras, dogs, radio running, etc. You can’t eliminate risk but you can certainly lower it to a level you judge as acceptable. An easy deterrent for you to add or improve is outdoor lighting and the reason is simple – people with malicious intents prefer the shadows and don’t want to be lit up for everyone to see.

Hard Wired Lights

When I say “hard wired”, I am talking about lights that are connected to the premises electrical power, such as 120 volts AC in the US. Most folks have at least porch lights and perhaps garage lights. Run them. These are deterrents – if people up to no good see a well lit home, it reduces their interest. Note that I did not say it makes 100% of them skip your home but the cost is trivial these days. If you are worried about cost, install LED bulbs – they seriously cut down power use. It used to be that LED bulbs cost a fortune but you can now routinely find them on sales for $1-2/ea.

Don’t want to run your lights all the time – 24×7? Granted you are wasting money and the lights running may signal “nobody is home”. We do not run out lights around the clock for both reasons – just dusk to dawn.

There are light sensors that simply screw in between the light and the lamp receptacle. Want timers? You can go with timers that flip the switch, timers that replace the switch and even smart programmable switches that connect to your WiFi and you can load schedules, etc. There are even programmable lights that have speakers in them to extend smart home sound systems — remember that an LED light element is going to last a long, long time all things being equal so it’s not as weird as it may sound.

Solar Lights

If you look at your property, odds are there are a lot of dark spots at night – we do. Running power to these areas wasn’t realistic but at the same time I wondered what I could do to light some of them up strategically. The short answer is solar security lights – not just the very dim walkway lights you see in garden centers. These lights range from dim to incredibly bright.

It turns out there are a ton of different model lights that can turn on dusk to dawn (or until the battery drains) or have a motion sensor that trips for some period of time (say 10-30 seconds) and then reset. You have options in terms of the brightness, how broad of an area is lit up, and so forth. I have a variety now.

You know what, these are pretty cool. The lights on the house are on all the time but these motion activated security lights not only give you light when you move around at night but they also serve like tripwires – a person (or deer) goes by and the light comes on startling them and they take off.

Here are some of the lights that I use. They all have motion sensors and have survived at least one Michigan winter including the -20F cold spell we had.

To the left you see a real bright solar security light with the motion sensor up top. A nice thing about this model is that long charging cord from the solar panel to the light. The side of the house where the light is located is in the shade. The side of the house where the panel is gets afternoon sun and recharges. This unit is about 3-4 years old and works great. You can see the garage light above and to the right of the solar panel. It is a dusk-to-dawn model. It has compact fluorescent bulbs currently but when they fail, I will replace them with LEDs.
You can see the small solar light just above the split in the doors. It’s small but does a great job – the solar panel is in the top of the unit. This Baxia BL-SL-101 light has a motion sensor, 28 LEDs, 400 lumen and comes in a four pack. This is one of my go-to lights when I just need a medium amount of light.
This is a Lemontek unit with 62 LEDs and the thing kicks out 2,000 lumen. It has a number of settings including dusk to dawn and motion sensor. We have a number of these and they do a great job. It is one of the models I use when I want a lot of light. You’ll notice a Baxia light back in the recessed area. The Lemontek covers a very broad area and the little one is just for the gate.
Here’s an example of one of our Baxia lights set up in a dark area of our yard. It has started a ton of deer when it has turned on unexpectedly at night due to its motion sensor.
This is an Aootek solar light with 48 LEDs, broad 180 degree illumination thanks to the angled panels, and while they don’t advertise the lumen (brightness), I can tell you it kicks out a lot of light.
This is a 4 year old Hallomall light. They stopped selling these when they introduced a new design so I switched to the Baxia brand. These came in a three pack and all still work. They sell other models that I have not tried.

The cheapest place I have found to buy these is Amazon and I read the reviews. Some have a ton of legitimate reviews and others have none at all – go with the model with more good reviews as opposed to fewer and taking a gamble. If you get a piece of junk, Amazon does have really good customer service but treat that as your safety net and try to buy the best you can. Note, some lights are sold individually and others come in 2, 4 or even larger quantity packages and it pays to do the math and see what is cheaper given the lights you need.

Solar lights do need sunlight to recharge so factor that into your plans. Also, they use batteries. I haven’t needed to open one up yet to replace them but I suspect some of them I will be able to replace the battery and others I will just need to replace the light due to age and oxidation of the solar panel and lens over the LEDs.

Smart Home Systems

Another category of lighting is taking off and those are the ones that are linked to smart home systems such as the Amazon Alexa. You can use voice control to turn on and off lights, set timers and much more through connected switches, outlets and other accessories. We use an Alexa in the kitchen and have a few Dots in other rooms. They are really handy once you get used to them.

Summary

Light up your property to deter vandals, burglars and trespassers. You have so many options using lights running off AC power to the tons and tons of options using solar. I use the AC light so people can see the area around the house is lit up and then I use solar lights to trip as needed and light up dark areas. Look at your property and consider how you might combine them with other security elements to reduce your risks.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

AK & Related Rifles, Serbia

6/4/19 Update From Zastava Regarding M91 Rifles

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This will be short post and not a very happy one from my perspective. A few days ago, I emailed Zastava USA for an update on their planned importation of the M91 rifle. They responded to me on June 4th and reported that they will have a “very limited number” some time this summer and the MSRP is $3,400. Wow. I had hoped it would be much more affordable than that – I’ll just have to stick with my M76 and M77 at that price point.

I had really hoped they would be more affordable but after my first post, a number of guys in the know said the price was going to be well over $2K depending on the options selected. Well, now I have the first hand info to pass along.

They did not respond about the M93 by the way. So, no updates on that front but given the pricing on the M91, I’m betting it will be high-priced as well.

Sorry I don’t have better news. For folks who can afford them, please post photos and your experiences so I can live vicariously.

They are here! The following are Zastava listings of weapons you can buy online and have shipped to your FFL:

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

AK & Related Rifles

Part 6: Two Rivers Arms Yugo M76 Rifle – The First Range Trip

I finally got a chance to take the Yugo M76 to the range and my youngest daughter went with me although now that she’s in college she’s gone a lot. I do have fun when she’s home as she loves shooting also and knows her way around a rifle.

Erika is getting the rifle situated. I forgot my good bench rest so we made do with a Caldwell bag rest I brought along just in case. The weather was great.

We set up at 100 yards and I did the initial test firing and sighting in of the rifle. Function-wise, it was great. We did not have a single failure to feed or eject the whole day.

By the way, my daughter is wearing MPOW 035 ear muff hearing protectors and she said they worked great. She wore them when we were shooting the M76, my .338 Lapua and 9mm Glocks. They are excellent not to mention a good deal. I have three sets of them now for her and others. I am still using my Howard Leight by Honeywell electronic ear muffs.7

Both of us were wearing NoCry safety glasses. I use ones that go over my prescription eye glasses and my daughter wears normal ones because she has contacts.

One thing the slowed me up a bit was that the laser bore sight didn’t really help me out much. I have a new one from Wheeler that works great on the actual muzzle end of rifles but it would appear the M76’s brake was not truly perpendicular to the bore. Normally it is pretty slick but at the range, I had to fire a number of rounds to even get them on the backing board first and then finally to the bullseye.

We were shooting S&B 196 grain SPCE ammo. My groups were about 1.5-2″. I’ll get back down to the range one of these days with my better rest so I can test the accuracy. I have some Hornady Vintage Match ammo too that has cool specs but since I didn’t have my bench rest with me, I largely saved it for next time and will explain why I said that in a moment.

Pierced Primers

The only problem we encountered was the firing pin piercing primers. We went through almost 40 rounds and about a third had pierced primers. This is a known issue with M76s and, yes, the rifle is headspaced properly.

At first I thought it might just be the S&B ammo so I tested it with five rounds of Hornady Vintage match also. I think two of the five Hornady rounds were pierced. At any rate, here are some photos of the S&B ammo.

Example pierced primer. It did this both on S&B and Hornady ammo.
At home, I grabbed some random brass and took this photo to show both pierced and cratered primers.

There are a lot of posts about the piercing and cratering of primers with the M76. I’m pretty busy right now but will read all that I can before I do anything.

First, I plan to confirm the pin protrudes between 1.42mm (.056″) minimum and 1.52mm (.060″) maximum.

Second, I want to compare how close the firing pin hole is to the firing pin on my other M76 bolt plus some of my AKs. I don’t think it looks unusually large but it should be investigated.

Third, I have a hypothesis – I think the firing pin needs more of a rounded radius. The current face of the firing pin is relatively flat. There were literally little punched pieces of primer laying on the firing bench that were flat and the primers that intact showed a very flat impact.

Those primer pieces, maybe they should be called chads, show a pretty flat firing pin face.

I’m not going to rush into anything. I do have a second complete bolt assembly that I can look at and scavenge from if need be. If you have suggestions, contact me – in**@*********ps.com.

Bottom line

We had a lot of fun. The rifle performed very well with no feed or ejection problems, no magazine problems and only the pierced primers were minor issue.

I do need to work on the cheek rest more so it stays in place better.

I definitely look forward to shooting this rifle with a better bench rest and also comparing it side by side with my .308 M77. Also, I’ll report back on what I try to correct the firing pin piercing or cratering primers at some point in the future. Until then, have a great day!

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

AK & Related Rifles, Serbia, Yugoslavia

Part 5: Two Rivers Arms Yugo M76 Rifle – How to Find the Correct Commercial Ammunition

I’m new to the Yugo M76 rifle and the world of the 8mm Mauser cartridge. When I searched on 8mm Mauser all kinds nomenclature (how it is named) popped up and I had to do some research to understand what to buy. To try and help others I decided to write a blog post to try and clarify what type of ammunition you need to look at for the M76.

IS, JS, IRS & JRS Cartridge Types

When I heard my M76 was almost done being built by Two River Arms, I started shopping for ammo and quickly got confused – I’m good at that. I really didn’t want to deal with old corrosive ammo so my focus was on current commercial offerings and not hunting down old surplus ammo, etc.

First off, you will notice that much of the 8mm Mauser has an “IS” or “JS” designator after the size such as 8×57 IS. The “I” comes from the German word “Infanterie” which means infantry and was mistaken by some to be a “J” so some groups refer to the round using a “JS” designator instead.

When the round was first officially adopted in 1888, it was for 0.318 bore rifles. The “S” dates back to 1903-1905 when “S Patrone” or S ball cartridge was developed for use in S-bore rifles that was larger at 0.323″.

The nomenclature of the rounds can vary because of this and other factors so you are looking for: 8mm Mauser, 8×57 IS, 8×57 JS, 8×57 and so forth. It will likely say IS or JS somewhere especially if it is European but American producers may just say “8mm Mauser”.

Do NOT buy 8×57 IRS or 8×57 JRS. These refer to a rimmed variant that was developed for use in break barrel sporting rifles – double rifles, drilling rifles and so forth. Once in a while you will see it for sale and it will NOT work in a M76. Just remember – if it ends in RS, your day is going to Really Suck 🙂

CIP and SAMMI Specs

The standards body for small arms ammunition in Europe is the Commission internationale permanente pour l’épreuve des armes à feu portatives (“Permanent International Commission for the Proof of Small Arms”. They refer to the 7.92×57 Mauser formally as 8×57 IS.

The US standards body is the Sporting Arms and Ammunition Manufactuers’ Insitute (SAAMI) and they refer to the round both 8mm Mauser and 8x57mm.

I also noticed one interesting detail – the CIP designated rounds are up to 390.00 MPa or 56,565 PSI. Rifles that use the round must be proof tested to 125% of this.

SAAMI is considerably lower at 241.3 MPa or 35,000 PSI and is done is for liability reasons. Among other things, they are concerned that someone may put a modern cartridge in an older narrower throat “I-Series” barrel.

What am I shooting?

I really like Sellier & Bellot from the Czech Republic and they have a number of rounds for the 8mm Mauser listed as 7.92x57JS. The only load I can seem to find from them in the US is the 196 grain Soft Point Cutting Edge (SPCE) cartridge. It functions great and is accurate in my M76. I’m getting about 1.5-2″ at 100 yards with it.

Here’s my S&B 196gr SPCE ammo. It has worked great so far and I am getting about 1.5-2″ groups at 100 yards shooting 5 round groups. I plan on taking my good bench rest the next time I go to the range and see if I can tighten up the groups.

I also have some of the Hornady Vintage Match but haven’t started using it yet. The specs Hornady publishes sure look good and I look forward to trying it.

Hornday Vintage Match 8x57JS. I just bought this and plan on trying this in the near future.
The unique looking top round is the 196 grain S&B Soft Point Cutting Edge (SPCE) round. This is supposed to be designed for medium game including boar, goats and deer. The bottom round is a Hornady Vintage Match cartridge and the bullet is a 196gr Boat Tail Hollow Point (BTHP) .

Where To Learn More

The following websites provide a lot of insight into the 8mm Mauser round for those of you who want to learn more.

Thank you for reading and I hope this helps you find ammo for your M76.

If you find this post useful, please share the link on Facebook, with your friends, etc. Your support is much appreciated and if you have any feedback, please email me at in**@*********ps.com. Please note that for links to other websites, I may be paid via an affiliate program such as Avantlink, Impact, Amazon and eBay.

When Strength and Quality Matter Most