I again chronographed those loads in question, same results, they were within 10 fps of the last time I chronographed them. I checked my chronograph with 222 rimfire loads, also fired a few 223 factory rounds, they registered within 7 fps of when I shot them last. The loads themselves appear to be safe.[/QUOTE If you see 1400 to 1500 fps, that would indicate where your problem lies. I'd be inclined to double check the chronograph, possibly light conditions were allowing a high reading, but try it again after you've shot some 22 LR across the screens and have seen *about* 1200 fps with a standard load. Mid 2800s for velocity, 41.1 Kpsi, so pressure is good, as indicated by ejection pattern, and the load is a compressed one at 111% case fill. Throats on 5.56 chambers are on the long side, helps with pressure. Your stated case length looks wrong, should be around 1.750" Developing loads beyond what I normally do kept my interest for a while.Have you checked the chrony with a 22 LR load, they are very consistent at 1200 or so fps, and if you get a good velocity with that, it will eliminate the chrony as a source of error. With the ammo shortage I have been finding ways to spend time at the range with a low round count. 223 but I tried it because I have a lot of it on hand for my M1 Garand loads. There are mixed opinions of it for use in. The NM irons have a tiny little aperture and knife edge thin front sight post which gives a great sight picture without obscuring any of the bullseye.įor just plinking steel where reliable function is more concern than accuracy both IMR 40 gave surprisingly good results. The sun and lighting was perfect to give me a very crisp sight picture with no glare. But I mostly enjoy shooting ARs with irons.Īll the stars aligned for that particular group. I am tempted to scope it and try some 68g match loads and see what she can do. I haven’t gotten any better accuracy than that so I started loading that up in bulk. With standard Federal or Winchester 55g factory practice ammo it’s a 2-4 moa gun. That’s not a 1” pastie, it’s probably a 2-3” sticker so that I could see it clearly with irons. I showed up to the range with 4-5 charge weights for 4 different powders to test. I had done quite a bit of shooting at that point. You can see it started opening up after a few shots and the barrel warmed up. That was after quite a bit of load testing of several different powders and charge weights. Projectiles are really high right and hard to find.Ĭlick to expand.Was 100 yards with the National Match iron sights on my Rock River 20”. I have some loaded and stashed away but I am out of those. 10-11 cents per projectile in 2k quantities to get it at that price. I also have loaded 24g of BLC under Hornady 62g FMJ with similar results. I settled on BLC2 because it shot well and I found a decent price on 8lb jugs that were in stock. I have some load data for the same bullets using CFE223, IMR4064, and IMR4895. I have guns with carbine, mid-length, and rifle length gas systems. I have tested in my 10.5”, 16”, and 20” guns. I shot the test load pictured from my RRA 20” NM. Very soft loads but have reliably cycled all of my ARs even when dirty. But most were spot on and I wouldn’t have known they were considered seconds just based on how they shot. The factory seconds had two different cannelure heights that I sorted before loading in batches. 308 NATO pulls I reload for my M1 Garand plinking load. I got them from Everglades ammo, same place I buy my. Surprisingly good accuracy for “factory seconds” projectiles I got for 7 cents a piece. I tested several different charges with several different powders before settling on this load.
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