[ARCHIVED THREAD] - Accuracy of AR15 Ammo - Part 2 Pics (Page 2 of 2)
I was also interested in that, but expected it to do fine. It did.
Nope, but didn't expect to. They just ignored my post, which is what I expected. I'm not a "certified" testing lab, so didn't think they would pay any attention to my results. |
I wonder, why the 1/7 twist then? The Mk262 is the highest grain .223 correct? Would it shoot even better with the 1/7? |
You get get up to 100 grain .223 rounds. |
That is correct. But to answer the question, "Would it shoot even better with the 1/7?", the answer is, "I don't know".  Maybe that's another little test I could look at in the future. There must be some reason for the faster twists. We'll have to look and see. |
Can we send funds or do you prefer ammo? You have 1/7 and 1/12 (is there a 1/10 also)? Maybe you could try every grn in every barrel and record the results. |
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Great thread as always Old_Painless, but I think a few members would take umbrage with your statement that "Group #1 - Handloads, .87 inches. (I can usually do better.)" As we all know, it is impossible to top that magical number.  Once again I find myself wishing I was in Texas to help out! 
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I appreciate the kind offer. I have a button on my site for Paypal donations. The Box O' Truth It's in the lower right hand corner. You will just have to blow the dust off of it. Sometimes if someone has ammo that I don't have, they have shipped me some for a test. But I usually can find it at the local gun shows. I'll see what I can develop on this one. |
You know, Templar223, you bring up an important point. I assume that the group you show is a 100 yard group with iron sights. If so, it is nothing to be ashamed of. It is actually fine shooting and better than the average person could shoot. I never understand why folks will lie about how small groups they can shoot. It really doesn't matter to anyone else, but those of us that shoot on a regular basis know that they are lying. If I were you, I'd be proud of that group. |
Believe it or not, I never even noticed the number. It was just what the caliper said.
Well, come on down. We go shooting at least once or twice a week. Bring plenty of ammo. 
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Cheers. O_P = the best |
Thanks again! How about, at 100yds, say 10 rnds each (five O_P, five Tman): 1/9 45grn (WWB value pack), 55grn (XM-193), 62grn (M855), 68grn, 75grn (Hornady), 77grn (Mk262) 1/7 45grn (WWB value pack), 55grn (XM-193), 62grn (M855), 68grn, 75grn (Hornady), 77grn (Mk262) These seem to be the big players these days. How about some BH 100grn  ?you'd be looking at 20rnds of each grain (unless you want to expand to other twist rates or do more rounds per grain to get a larger sample size for avg's) I once read a snippet here that there was something different about 75grn that skewed results. Side-info, www.ammo-oracle.com/body.htm#whattwist Q. What twist rate do I want for my rifle? Probably 1:9, but it depends on what kind of bullets you intend to shoot. Special purpose rifles often have uncommon twist rates. For example, if you are building a varmint rifle and want to shoot the short 35 grain, 40 grain, and 50 grain bullets, a 1:12, or even 1:14 twist would be best. On the other hand, long range High Power shooters often select 1:8, 1:7.7, 1:7, or 1:6.5-twist barrels to stabilize the long 77, 80 and even 90 grain bullets used for 1,000 yard competition. Additionally, new testing of heavier rounds (68-77 grains) seems to show that they perform very well in simulated tissue and may be a better defensive choice than 55 grain or 62 grain rounds. The majority of shooters, though, typically shoot bullets of 50 to 69 grains in weight (note that the 62gr SS-109/M855 bullet is as long as a 71 grain lead core bullet) and should select 1:9 twist barrels. At typical .223 velocities, a 1:9 twist will stabilize bullet lengths equivalent to lead-core bullets of 40 to 73 grains in weight. 1:12 twist rifles cannot stabilize SS-109/M855 bullets and 1:7 twist rifles are slightly less accurate with lighter bullets and will often blow apart the thin jackets of lightweight varmint bullets. The 1:7 twist is used by the military to stabilize the super-long L-110/M856 tracer bullet out to 800 yards, but unless your plans include shooting a significant amount of M856, the 1:9 twist rate is better suited for general use. There is, of course, an exception: if you want to use loads utilizing the heavier, 75-77 grain match bullets currently used by Spec-Ops troops and other selected shooters, you'll want a 1:7 twist barrel. Although military loadings using these bullets are expensive and hard to get, some persistent folks have managed to obtain a supply, and will need the proper barrel twist to use them. Anyone who foresees a need to shoot this ammo should consider a 1:7 twist barrel. Opinions (Pro and Con): 1:9 is best. Why? Flexibility. It doesn't seem to have any problems throwing M856 tracers around, unless it gets really cold, it wears better than 1:7 and it stabilizes more rounds than 1:12. Additionally, 1:9 rifles, even Mil-Spec chrome chambered and barreled, can attain 1.0-2.0 MOA out to 300+ meters. No, 1:7 and 1:8 are the best. Why? Accuracy. For heavier and longer rounds during competition shooting, 1:8 and 1:7 twists are the best for heavy 77-80 grain rounds that I use to shoot competitively at 500-1000 meters. Who needs to shoot tracers anyhow? More importantly, heavier rounds are showing very good results in terminal testing and are proving to be much better defensive rounds. |
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Looking forward to your test results. Thanks again O_P I found this earlier today FROM THIS THREAD - another great thread.
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Hi: 5 shoot IMI 55grs SierraMatchKing (HPBT): ~14 mm my best group http://foren.waffen-online.de/index.php?act=Attach&type=post&id=5604 Oberland Arms OA-15, 20", standart trigger (now Jewell), Lothar Walter stainless Bullbarrel, 4-16x Scope, and a good day bye Oli |
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OP ... my experience as you know is in LE sniping only and I make no claims otherwise. Most cops in the US are still shooting Fed GM 168s. Some shoot the Fed GM 175s in their 7.62s The Hornady TAP AMAX 168s and 155s are gaining a strong foothold due to better terminal performance and we have found they are as accurate as the GM match stuff. fwiw BK |
Well, we might have to gather up an assortment and go shooting. It's about time for me to give you a lesson.
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I appreciate the information. Tman and I have shot many different lots of Wolf. The results you see here are typical. We have never seen anything even close to 2 MOA with Wolf. Doesn't mean that we don't shoot a lot of it and enjoy it for plinking. But 2 MOA it ain't. |
| This post makes me feel so much better about my shooting skills I always thought that people actually shot good with wolf but obviously that isn't true. I used to shoot it and get so mad that I couldn't get it dialed in good it seemed like it would shoot 2 rounds close together and then the next one would be on the other side of the target. Hell I haven't been shooting lately because I've been so mad at my accuracy I just need to shoot some better ammo. Thanks a lot for the evaluation of the ammo. |
You're welcome. Wolf is fine for just plinking and dirt bank shooting. But if you want to test yourself or your equipment, get some better ammo. 
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Do yourself a favor and buy an ammo cans worth of Georgia Arms Canned Heat (just don't buy all of it). |