The max H322 charge in that 223 data was at 2.550"! That's almost .3" more than your AR 2.260" OAL! THAT'S why their max charge is way higher than that AR-15 data. Be very careful. H322 is an extremely fast 223 powder (for heavy bullets) and pressure will get out of hand very quickly. If you want to stick with an extruded powder and chase max velocity in 5.56/223, pick up some VihtaVuori N540. AR Comp and 8208 XBR have been good performers for me as well, but I feel a little short of Mk262 velocities. On the ball powder side of things, Accurate 2520, Alliant PP 200-MR, Alliant PP Varmint and CFE 223 are good places to start. Just be careful with that H322.
Johnny's Reloading Bench Shit! That would make the difference! I will watch as I go, I’ve shot H322 pretty hot in my old barrel we will see what happens. I didn’t load to that max I’m working up in .3 increments more to come after the next trip
I've been recently experimenting with CFE (in 40ish deg weather) and I'm finding 2750 at 25.4gr with 2.26 with 75gr bthp hdy. Group are still averaging bit larger than 1" but I think I can find the sweet spot for my 1/7 20" barrel. I have a much slower node in 2400 range that shoots lights out but I feel the need for speed.... famous last words. It was Johnny's fault!
I just did the same thing. I went with H4895. 23.4 was my max with a Hornady 75 bthp. I went with 23.1 and my adjusted velocity with trajectory validation at 560yds put my me running right at 3000 fps out of a 24" barrel in my ar-15.
Just started reloading about a year ago learning a lot from you guys like Johnny's reloading bench , Vaughn precision , Panhandle precision and several others. lots of good information out there. I have a AR 15 chambered in 5.56 NATO 16 CHF by BCM , GEISSELE trigger , Tubbs flat wire buffer spring , Spikes st2 , Bushmaster lower , BCM BCG, SJC break. I put this together little over a year ago and been learning to load for it and as Johnny's Reloading Bench always says trying not to blow my face off. So far I've used 8208 XBR, Accurate 2520, AR-Comp and had really good luck out of 8208 XBR & AR-Comp pushing 77 SMK & 77 Berger OTM , LC brass , cci #41. I'm obsessed on shooting long range now. So far I have been working up loads magazine length and just here recently I've been loading .10 off the lands hand feeding and getting crazy good groups .215 moa at 200 yards with 77 Berger OTM average velocity 2715 , ES 10 SD 3.7 , 23.0 AR-comp. but for some reason over the summer when it was in the 80 & 90 out I was only getting 2560 seated at 2.250'' & 23.6 was getting me 2645 this charge was well over max and didn't see pressure until 24.0 and now for some reason I'm getting 2630 with 23.0 seated at 2.250'' with the temperatures 30 & 40s . Cleaned my barrel real good today to see if that would make a difference but its the same . I didn't do any copper fowling clean and not sure if would help but I guess it wouldn't hurt to try. My ES & SDs are still low and my groups are still really good , some people might say don't mess with it and I couldn't agree more but this has me stumped. If you or anybody else ever had this kind of problem your input would be greatly appreciated. thanks and keep the videos coming West Desert Shooter your doing awesome job.
Ditch the trigger get a CMC flat. Get the Lee reloading manual. 22.0 grains is max load. Shoot an M4 config with 1:7 twist stays under 1/2 moa out to 300 yards. I do use CCI primers and Lake City brass. Oal of 2.2495.
I got lucky with a AR-15 being very accurate around 10 years ago . Bought a kit out of shotgun news with 24 inch stainless barrel. Shooting Georgia arms 62 gr ballistic tips it would hold 5 shot group inside of a dime very easily . Then cause it was heavy ! I sold it like a dummy and I never had one shoot that good again even that had more money in .
Anyone interested in that MOA calculation app. You should be shooting at "grided" targets. Then you use the grid as reference for the app to calculate the group size.
I use AA 2520 and ram shot TAC for my MK262 loads. I get 2850 with 77 SMK. 2520 shows less pressure than TAC and same speed with lower SD.. BTW most all .556 brass is lighter than .223. That allows for the extra powder in the case . The latest Sierra manual has current .556 data in addition to .223. Be careful with your last powder your about to step in the danger zone.
Really enjoy your videos. This rifle build inspired me to set up my own “SPR”. 18” White Oak Armament spr upper shoots IMI mk262 ammo sub moa all day. Hard on foxes and groundhogs for sure
It's been a while since this was uploaded, but the difference in max loads for H322 is likely due to the chambers. AR's can be chambered in many variants of a 5.56 NATO chamber, which is cool, but also a point of frustration if your reloading manual doesn't state which chamber was used. Sierra and Hornady manuals are pretty good about listing the chamber. The .223 Wylde has become very popular, as it was designed to seat 77 SMK very close to the lands when loaded to mag length. That same ammo might be jammed in the lands in a classic .223 Remington chamber, and might be jumping a lot more to the lands in a 5.56 NATO chamber. Which brings up another point... Your chamber is only as good as the person that cut it. I always check the max distance to the lands for every type of bullet I'm planning to shoot. There's a pretty good article comparing several different 5.56 NATO chambers. The author found them to be all over the place. So it's best not to assume you've received what you asked for. Always verify.
It’s not easy having both maximum accuracy and high velocity for a given bullet. In my testing for my SPR build using a Douglas 18 inch Mk 12 barrel, so far it has shot the best groups with only 21.5 grains of Varget for a 77 gr. OTM. Starting grains is 21, so truly at the low end for velocity for .223. Also I have found that using 3 round groups in your testing won’t tell you a whole lot. It’s much more revealing to shoot 10 round groups, then sub moa really means something. For instance Tikka guarantees their rifles to be sub moa for 3 shots using Sako match ammo, while Sako, the parent company gives a 5 shot moa guarantee with Sako match ammo. Gas guns are harder to shoot consistently accurate. When I shot my first sub moa 10 round group there were only a few seconds between shots and I did not break my position or come out of the glass. Any slight difference in position can cause flyers compared to my bolt guns, at least for me. Thank you for your videos and keep up the good work.
Varget works best for me in .25-30 caliber and smaller 5.56. I’m mostly a carbine guy though I do have a stock Bushmaster Varminter which is similar indeed to your rifle in this video. My accuracy loads are always individual powder loads measured on a digital scale, loaded on my old school RCBS single stage and then micrometer check each round. That being said I’ve been grouping very well with CFE 223 and H4895 or Reloader 15 can be excellent go to choices for very accurate heavy 5.56
Love the video. I wish we had more options for 22 projectiles though. I would love a 62 or heavier version of Hornady's excellent 55 grain cannelured soft-point boat tails. I've been able to ring a 500 yard target about half the time and hit the 250 almost every time with both 55 and 62 soft pointed bullets out of my 16 inch semi auto. I'm launching my own channel in the next few weeks, and one of my first series will be my experiences reloading 308 eld-x for my sig 716 dmr. I finally shot it at long range this weekend, and that 1000 yard plate was singing for me!
Good stuff as always. I just got some H4895 to try with the .224 Valkyrie. I have been seeing some good stuff with that powder and want to try it out for myself..
Good effort. Two things: first, LC 5.56 brass is not thick. It's actually some of the thinnest brass out there. You can easily test this. Second, if you know you have an unreliable trigger that will randomly go binary on you, why would you continue to try to shoot semiauto? The simple fix would have been to load rounds one at a time and your groups would have been a better representation of what your rifle liked.
Weight sorting your bullets should help shrink your groups at range. Along with sorting your brass. Sure helped me get better groups when I shot IBS in my 6 Dasher. My AR has the H3 Buffer and adjustable gas block so it barely spits the brass out.
Interesting video, thank you! I am in the process of building my AR with long range in mind; nothing crazy, but I'd like to go around 600yards or so. I am tempted by some 5.56 barrels cause cheaper than 223wylde ones and with interesting features. 18" or 20", 1:7 twist, government profiles. Do you think I would obtain nice results with one of those? Thank you!
Have you tried BL(c)-2 or the CFE 223? I've experimented with these in my AR, and had good results, but never in more than 62gr. bullets, since the barrel of my last rifle was 1:9. However, my new rifle is 1:8, so I'm watching closely your results
Kimber Marshall both are great powders for bulk 223FMJ ammo, but not really consistent in velocities or standard deviations. And they are both temp sensitive, so make sure you do load development in the summer if searching for top speeds, find a max pressure load in the winter and then run it in summer will pop primers or worse.
I’ve watched them all, I’m figuring out what my rifle likes. Loads like this have to be developed to each rifle. I’d highly suggest not copying his data directly
One of my 2019 projects is exactly what you are doing, so I will be following your project. For your powder choices, did you considered CFE223? The 2019 Hodgdon manual shows 75gr load data for CFE223 as follows: Start 23.0grs 2680fps 45,200PSI Max 25.0grs 2876fps 54,400PSI. I have had good performance from CFE223 with other .223 bullet weights, and I am using the powder in a .308 Win project I’m working on. If you have not looked at the powder before, it’s a fine a frog hair, and meters exceptionally well.
Tim Farley the problem is CFE223 is very very temperature sensitive, and while I have had decent 100yd groups, the velocities are so inconsistent that once you go to 300+ yards, it doesn’t group for junk in my tests. It’s a great powder for what it was designed (ie bulk 223FMJ loads) but not a precision powder, at least in my guns. While still a bit temp sensitive, I’ve had better luck with Power Pro Varmint and 2000-MR, but for extended range accuracy I typically use Viht N-140, IMR4064, Both H4895 and IMR4895, they give phenomenal accuracy and velocity is very consistent and close to what CFE223 will do, just with better consistency.
@@jimhans1 Now that you mention it, my previous CFE223 experience was with bulk FMJ loads. I have both H4895 and IMR4064 on the shelf and will see how they perform for me; thanks for the tip and I will be following your videos on this project. Life is good.
Tim Farley also try benchmark powder, very stable and extremely accurate. PS. I’m not West desert shooter, I’m just a competition shooter and reloader.
How tight does your barrel fit? Have you tried lapping the receiver, shimming or bedding the barrel with green wicking loctite to squeeze out some better accuracy? There's other tricks too like playing around with the barrel nut torque and adding barrel tensioners. ruclips.net/video/HgXgPJZDFYE/видео.html ruclips.net/video/4Si557t-W_s/видео.html ruclips.net/video/i1H11MhCVzc/видео.html
@@WestDesertShooter Even with a "snug" fitting barrel extension green wicking loctite is recommended to make the fitment perfect. Playing with the tension on the barrel nut changes the harmonics too. Check out those video links I posted, interesting stuff!
No sense in doing that really. Johnnys Reloading Bench has done an extensive review of it... It's well known that it is not a commercially available powder. On top of that, they change the formula and bullets/brass/powder/primer from time to time.
77 match king lake city case sized and trimmed to spec 25.2 grains of AA2520 any small rifle primer. DO NOT SHOOT THIS LOAD OUT OF A SAMMI SPEC 223 REMINGTON CHAMBER. THIS IS A NATO PRESSURE LOAD!!! This load is for a wylde or NATO chambered rifle!! With that said, its super accurate and and the head on the wall in my man cave will attest to its performance.
@@beretta989AR type rifles have floating firing pins and hard primers are required for this reason, not for hot loads. 25.2 grains of AA2520 develops way to much pressure for a SAMMI 223 Remington chamber when using a 77 grain bullet.
Please buy a better barrel that’s sad. When you said Midway I knew then.. If your on a budget then the basement floor is Criterion barrels. That’s as cheap as you can get but still have hand lapped barrels.
It depends on the barrel quality. In real world hunting, you are taking 1 or 2 shots at most and not taking 10 shots. So cold bore accuracy is important versus shooting a warm to hot barrel not stress relieved.
The max H322 charge in that 223 data was at 2.550"! That's almost .3" more than your AR 2.260" OAL! THAT'S why their max charge is way higher than that AR-15 data. Be very careful. H322 is an extremely fast 223 powder (for heavy bullets) and pressure will get out of hand very quickly. If you want to stick with an extruded powder and chase max velocity in 5.56/223, pick up some VihtaVuori N540. AR Comp and 8208 XBR have been good performers for me as well, but I feel a little short of Mk262 velocities. On the ball powder side of things, Accurate 2520, Alliant PP 200-MR, Alliant PP Varmint and CFE 223 are good places to start. Just be careful with that H322.
Johnny's Reloading Bench Shit! That would make the difference! I will watch as I go, I’ve shot H322 pretty hot in my old barrel we will see what happens. I didn’t load to that max I’m working up in .3 increments more to come after the next trip
I've been recently experimenting with CFE (in 40ish deg weather) and I'm finding 2750 at 25.4gr with 2.26 with 75gr bthp hdy. Group are still averaging bit larger than 1" but I think I can find the sweet spot for my 1/7 20" barrel. I have a much slower node in 2400 range that shoots lights out but I feel the need for speed.... famous last words. It was Johnny's fault!
Orie Wall CFE 223 is good stuff, 4895 does the job well too with 75gr Swift or Hornady pills.
I just did the same thing. I went with H4895. 23.4 was my max with a Hornady 75 bthp. I went with 23.1 and my adjusted velocity with trajectory validation at 560yds put my me running right at 3000 fps out of a 24" barrel in my ar-15.
You know what the great thing is, that guys offer help, suggestions, amd words of caution. What's not to like. Life is good.
High Power / CMP guys commonly use 24g varget for any 77g class bullet.
This is going to be a great series comparing the 3 calibers.
I hope so man!
What I find so magical about mk262 is the low recoil. I'm at a similar load with 24.5g of varget (slow lot, used to shoot 24.1)
Just started reloading about a year ago learning a lot from you guys like Johnny's reloading bench , Vaughn precision , Panhandle precision and several others. lots of good information out there. I have a AR 15 chambered in 5.56 NATO 16 CHF by BCM , GEISSELE trigger , Tubbs flat wire buffer spring , Spikes st2 , Bushmaster lower , BCM BCG, SJC break. I put this together little over a year ago and been learning to load for it and as Johnny's Reloading Bench always says trying not to blow my face off. So far I've used 8208 XBR, Accurate 2520, AR-Comp and had really good luck out of 8208 XBR & AR-Comp pushing 77 SMK & 77 Berger OTM , LC brass , cci #41. I'm obsessed on shooting long range now. So far I have been working up loads magazine length and just here recently I've been loading .10 off the lands hand feeding and getting crazy good groups .215 moa at 200 yards with 77 Berger OTM average velocity 2715 , ES 10 SD 3.7 , 23.0 AR-comp. but for some reason over the summer when it was in the 80 & 90 out I was only getting 2560 seated at 2.250'' & 23.6 was getting me 2645 this charge was well over max and didn't see pressure until 24.0 and now for some reason I'm getting 2630 with 23.0 seated at 2.250'' with the temperatures 30 & 40s . Cleaned my barrel real good today to see if that would make a difference but its the same . I didn't do any copper fowling clean and not sure if would help but I guess it wouldn't hurt to try. My ES & SDs are still low and my groups are still really good , some people might say don't mess with it and I couldn't agree more but this has me stumped. If you or anybody else ever had this kind of problem your input would be greatly appreciated. thanks and keep the videos coming West Desert Shooter your doing awesome job.
You need to check out Johnny’s reloading bench video on 223 case capacity. Lake city 556 brass has some of the largest case capacity on the market.
Yeah, 5.56x45 brass is not thicker brass. Its all in the chamber reamer.
Watching with interest buddy on how this story unfolds , l just love a good reload saga haha 😁👍
Huge thanks man!! There seems to be potential. I just ordered some 77gr to try out. Hopefully we can get something going for it. 👍👍
I’ll be watching these videos closely . I was able to do it successfully with 8208XBR and CCI41’s. This will be a great series.
Ditch the trigger get a CMC flat. Get the Lee reloading manual. 22.0 grains is max load. Shoot an M4 config with 1:7 twist stays under 1/2 moa out to 300 yards. I do use CCI primers and Lake City brass. Oal of 2.2495.
Great video, can't wait for more. I feel like some of the Alliant offerings may be your friend in this quest for speed and accuracy.
keep stuffing varget in, have had great results with some pretty compressed loads of varget with no presssure signs, have seen sub 1/4 moa this way
I’ve shot 24g already and it was showing pressure in my gun
This is great, a 223 work up for a regular AR-15. Keep it coming
I got lucky with a AR-15 being very accurate around 10 years ago . Bought a kit out of shotgun news with 24 inch stainless barrel. Shooting Georgia arms 62 gr ballistic tips it would hold 5 shot group inside of a dime very easily . Then cause it was heavy ! I sold it like a dummy and I never had one shoot that good again even that had more money in .
Anyone interested in that MOA calculation app. You should be shooting at "grided" targets. Then you use the grid as reference for the app to calculate the group size.
I use AA 2520 and ram shot TAC for my MK262 loads. I get 2850 with 77 SMK. 2520 shows less pressure than TAC and same speed with lower SD.. BTW most all .556 brass is lighter than .223. That allows for the extra powder in the case . The latest Sierra manual has current .556 data in addition to .223. Be careful with your last powder your about to step in the danger zone.
Really enjoy your videos. This rifle build inspired me to set up my own “SPR”. 18” White Oak Armament spr upper shoots IMI mk262 ammo sub moa all day. Hard on foxes and groundhogs for sure
Those WOA barrels kick ass man I want one at some point
West Desert Shooter I’m very pleased with mine. Got a t shirt with it too!
Great video! Love how you say “Palmato” like Tomato. 🤣 Keep the great content coming!
That is my favorite 5.56 round. 5.56 - 77 grain OTM sealed primer with cantilevered SMK bullets.
Makes shooting out to 600-800 not a big deal.
It's been a while since this was uploaded, but the difference in max loads for H322 is likely due to the chambers. AR's can be chambered in many variants of a 5.56 NATO chamber, which is cool, but also a point of frustration if your reloading manual doesn't state which chamber was used. Sierra and Hornady manuals are pretty good about listing the chamber. The .223 Wylde has become very popular, as it was designed to seat 77 SMK very close to the lands when loaded to mag length. That same ammo might be jammed in the lands in a classic .223 Remington chamber, and might be jumping a lot more to the lands in a 5.56 NATO chamber. Which brings up another point... Your chamber is only as good as the person that cut it. I always check the max distance to the lands for every type of bullet I'm planning to shoot. There's a pretty good article comparing several different 5.56 NATO chambers. The author found them to be all over the place. So it's best not to assume you've received what you asked for. Always verify.
It’s not easy having both maximum accuracy and high velocity for a given bullet. In my testing for my SPR build using a Douglas 18 inch Mk 12 barrel, so far it has shot the best groups with only 21.5 grains of Varget for a 77 gr. OTM. Starting grains is 21, so truly at the low end for velocity for .223. Also I have found that using 3 round groups in your testing won’t tell you a whole lot. It’s much more revealing to shoot 10 round groups, then sub moa really means something. For instance Tikka guarantees their rifles to be sub moa for 3 shots using Sako match ammo, while Sako, the parent company gives a 5 shot moa guarantee with Sako match ammo. Gas guns are harder to shoot consistently accurate. When I shot my first sub moa 10 round group there were only a few seconds between shots and I did not break my position or come out of the glass. Any slight difference in position can cause flyers compared to my bolt guns, at least for me. Thank you for your videos and keep up the good work.
Varget works best for me in .25-30 caliber and smaller 5.56. I’m mostly a carbine guy though I do have a stock Bushmaster Varminter which is similar indeed to your rifle in this video. My accuracy loads are always individual powder loads measured on a digital scale, loaded on my old school RCBS single stage and then micrometer check each round. That being said I’ve been grouping very well with CFE 223 and H4895 or Reloader 15 can be excellent go to choices for very accurate heavy 5.56
Interesting stuff man good job
Love the video. I wish we had more options for 22 projectiles though. I would love a 62 or heavier version of Hornady's excellent 55 grain cannelured soft-point boat tails. I've been able to ring a 500 yard target about half the time and hit the 250 almost every time with both 55 and 62 soft pointed bullets out of my 16 inch semi auto.
I'm launching my own channel in the next few weeks, and one of my first series will be my experiences reloading 308 eld-x for my sig 716 dmr. I finally shot it at long range this weekend, and that 1000 yard plate was singing for me!
Try these: www.midsouthshooterssupply.com/item/001532276c1500/22-caliber-point224-diameter-62-grain-bthp-with-cannelure-1500-count
LC BRASS- 23.8 GRAINS IMR 8208 XBR POWDER-FEDERAL MATCH PRIMMERS-NOSLER CC 77 GRAIN BULLETS
Good stuff as always. I just got some H4895 to try with the .224 Valkyrie. I have been seeing some good stuff with that powder and want to try it out for myself..
Good effort. Two things: first, LC 5.56 brass is not thick. It's actually some of the thinnest brass out there. You can easily test this. Second, if you know you have an unreliable trigger that will randomly go binary on you, why would you continue to try to shoot semiauto? The simple fix would have been to load rounds one at a time and your groups would have been a better representation of what your rifle liked.
23gr h335 with a Hornady 75gr hpbt gives me one hole groups at 100 yards all day out of an 18” bbl 1-8 twist
I had the same issue with the full size dies.
question my friend: noob here-can any gain be had with expensive brass i.e. Lapua?
BLC-2 gave me the speed I wanted with 75 Hornaday match.
Weight sorting your bullets should help shrink your groups at range. Along with sorting your brass. Sure helped me get better groups when I shot IBS in my 6 Dasher. My AR has the H3 Buffer and adjustable gas block so it barely spits the brass out.
Interesting video, thank you! I am in the process of building my AR with long range in mind; nothing crazy, but I'd like to go around 600yards or so. I am tempted by some 5.56 barrels cause cheaper than 223wylde ones and with interesting features. 18" or 20", 1:7 twist, government profiles. Do you think I would obtain nice results with one of those? Thank you!
Would a 223 be diffrent than the 5.56 ?
Hey, where did this end up? Did you ever find the load that matches the 77gr stuff you test fired? If so did it have the same accuracy?
Have you tried BL(c)-2 or the CFE 223?
I've experimented with these in my AR, and had good results, but never in more than 62gr. bullets, since the barrel of my last rifle was 1:9. However, my new rifle is 1:8, so I'm watching closely your results
Kimber Marshall both are great powders for bulk 223FMJ ammo, but not really consistent in velocities or standard deviations. And they are both temp sensitive, so make sure you do load development in the summer if searching for top speeds, find a max pressure load in the winter and then run it in summer will pop primers or worse.
You should watch Johnnys series on this and take his bests and build on them....
I’ve watched them all, I’m figuring out what my rifle likes. Loads like this have to be developed to each rifle. I’d highly suggest not copying his data directly
The charge weight on the 80 gr bullet is higher due to the oal of the 80 gr. Load, its loaded to 2.550 or so
Yeah I was just made aware of that. Good catch thanks man
...I'm getting great results with H322 and 69grn SMK from a 1:9, 22" barrel bolt rifle. 23.1grn to 2.250". SubMoA @500 yards.
I’ve had good luck out of 8208xbr in my AR. Also you can check out Hodgdons website for load data.
Yep I’ll be buying a pound soon for my Grendel
Awesome. 😁👍
Thanks for watching dude!
One of my 2019 projects is exactly what you are doing, so I will be following your project. For your powder choices, did you considered CFE223? The 2019 Hodgdon manual shows 75gr load data for CFE223 as follows: Start 23.0grs 2680fps 45,200PSI Max 25.0grs 2876fps 54,400PSI. I have had good performance from CFE223 with other .223 bullet weights, and I am using the powder in a .308 Win project I’m working on. If you have not looked at the powder before, it’s a fine a frog hair, and meters exceptionally well.
Tim Farley the problem is CFE223 is very very temperature sensitive, and while I have had decent 100yd groups, the velocities are so inconsistent that once you go to 300+ yards, it doesn’t group for junk in my tests. It’s a great powder for what it was designed (ie bulk 223FMJ loads) but not a precision powder, at least in my guns. While still a bit temp sensitive, I’ve had better luck with Power Pro Varmint and 2000-MR, but for extended range accuracy I typically use Viht N-140, IMR4064, Both H4895 and IMR4895, they give phenomenal accuracy and velocity is very consistent and close to what CFE223 will do, just with better consistency.
@@jimhans1 Now that you mention it, my previous CFE223 experience was with bulk FMJ loads. I have both H4895 and IMR4064 on the shelf and will see how they perform for me; thanks for the tip and I will be following your videos on this project. Life is good.
Tim Farley also try benchmark powder, very stable and extremely accurate.
PS. I’m not West desert shooter, I’m just a competition shooter and reloader.
@@jimhans1 Well thanks for your feedback anyway.
Watch Johnnys reloading bench series on it
Have you pulled a bullet from that MK262 to try to figure out what powder they use and how much?
How tight does your barrel fit? Have you tried lapping the receiver, shimming or bedding the barrel with green wicking loctite to squeeze out some better accuracy? There's other tricks too like playing around with the barrel nut torque and adding barrel tensioners.
ruclips.net/video/HgXgPJZDFYE/видео.html
ruclips.net/video/4Si557t-W_s/видео.html
ruclips.net/video/i1H11MhCVzc/видео.html
The upper has been spun in a lathe and trued the barrel was snug its good to go. I might try ditching the muzzle brake if the next batch doesn’t group
@@WestDesertShooter Even with a "snug" fitting barrel extension green wicking loctite is recommended to make the fitment perfect. Playing with the tension on the barrel nut changes the harmonics too. Check out those video links I posted, interesting stuff!
Pull a mk262 factory round and weigh the powder charge, just out of curiosity.
No sense in doing that really. Johnnys Reloading Bench has done an extensive review of it... It's well known that it is not a commercially available powder. On top of that, they change the formula and bullets/brass/powder/primer from time to time.
77 match king
lake city case sized and trimmed to spec
25.2 grains of AA2520
any small rifle primer.
DO NOT SHOOT THIS LOAD OUT OF A SAMMI SPEC 223 REMINGTON CHAMBER.
THIS IS A NATO PRESSURE LOAD!!!
This load is for a wylde or NATO chambered rifle!!
With that said, its super accurate and and the head on the wall in my man cave will attest to its performance.
rdsii64 -AR 15s have to use Hard primmers specially when Reloading warm to Hot loads.
@@beretta989AR type rifles have floating firing pins and hard primers are required for this reason, not for hot loads. 25.2 grains of AA2520 develops way to much pressure for a SAMMI 223 Remington chamber when using a 77 grain bullet.
rdsii64 -Yep been Reloading for 223Ai ARs 204s and 17 Remington for years.
Please buy a better barrel that’s sad. When you said Midway I knew then.. If your on a budget then the basement floor is Criterion barrels. That’s as cheap as you can get but still have hand lapped barrels.
3 shot groups mean little.
It depends on the barrel quality. In real world hunting, you are taking 1 or 2 shots at most and not taking 10 shots. So cold bore accuracy is important versus shooting a warm to hot barrel not stress relieved.