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.223 varmint bullet, 1-9 twist, will it fail?

 
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  #22  
Old 06-16-2012, 09:46 PM
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Re: .223 varmint bullet, 1-9 twist, will it fail?

It's all about shot placement. A deer can still run a long way with a 50cal through non-vitals. A good knowledge of the anatomy of what you are hunting and being able to hit where it counts will bring them down quicker.

The 223/5.56 is an effective out beyond 500yds with the right load.

Some 1/9's will perform well with a heavier bullet, some won't. It's good to get some range time in with different loads to determine which one works best out of a particular rifle. All of my AR's are 1/7, not the best for lighter stuff. Example a 50gr Varmit grenade, my best group was .75", with the worst being 1.6".
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  #23  
Old 06-17-2012, 08:59 AM
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Re: .223 varmint bullet, 1-9 twist, will it fail?

22 cal is a peculiar animal though. Nearly all bullets are made for prarie dog and coyote size critters, or they are fmj mil type. Barnes is the only bullet I'd use on a deer if I had to, but why. I've got 9 other rifles in the basement ready to go that are big enough to shoot anything on the continent.
I've heard of and seen quite a few kills on deer with 22 cal. here in N.D., and every one has been a head shaking moment, save one;.I used to shoot with a guy that developed a load for his swift with the original Barnes x. He head-shot a doe at moderate range and it went right down.
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  #24  
Old 06-20-2012, 05:24 PM
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Re: .223 varmint bullet, 1-9 twist, will it fail?

Avoid a Sierra Blitz, those are for 22 Hornet and other low velocity 22's.

Sierra Blitz King, Hornady V-Max, and Nosler Varmint Ballistic Tip all shoot great in my .223 1-9tw AR. They put a pretty good divot in cheap steel targets at 100 yards.
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  #25  
Old 06-20-2012, 10:17 PM
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Re: .223 varmint bullet, 1-9 twist, will it fail?

One thing you got to remember is this. 1/10, 1/9 & 1/7 twist will in some rifles behave differently. The 1/10 & 1/9 are 'generally good for 55g & lighter bullets while the 1/7 is good for 55g & heavier. This is not written in stone. You need to find some ammo in the neighborhood that you want to use and try it out and determine which is best suited for 'your' particular rifle.
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  #26  
Old 06-21-2012, 07:26 AM
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Re: .223 varmint bullet, 1-9 twist, will it fail?

Quote:
Originally Posted by CaptainCrunch View Post
One thing you got to remember is this. 1/10, 1/9 & 1/7 twist will in some rifles behave differently. The 1/10 & 1/9 are 'generally good for 55g & lighter bullets while the 1/7 is good for 55g & heavier. This is not written in stone. You need to find some ammo in the neighborhood that you want to use and try it out and determine which is best suited for 'your' particular rifle.
Usually for the 9" twist guns, a 75 or 77 grain pill is about it. Even some of the poly-tipped bullets won't work in a 9" twist. I don't own a 10" twist gun, but I suspect that a 10" twist would top out at 68 grain or so.
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  #27  
Old 06-21-2012, 08:58 AM
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Re: .223 varmint bullet, 1-9 twist, will it fail?

I doubt a 1/9 would stablize a 75gr bullet. It's possible for shorter ranges, but I wouldn't want to bet my life on it.

I was fortunate with the upper(1/7) that I grabbed to build what became my favorite AR. It shoots most everything 55gr and heavier sub MOA.

I loaded some 50gr Varmit Grenades using 23.0 - 23.6gr of Varget. 23.3 was the only load that shot sub MOA(0.9"). There was 1 that was 1.2, the rest were pretty ragged.

The main thing is this. Find the load that works best for your gun. It takes some extra time, but in the long run it will be worth it.
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  #28  
Old 06-21-2012, 09:34 AM
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Re: .223 varmint bullet, 1-9 twist, will it fail?

Quote:
Originally Posted by CaptainCrunch View Post
I doubt a 1/9 would stablize a 75gr bullet. It's possible for shorter ranges, but I wouldn't want to bet my life on it.

I was fortunate with the upper(1/7) that I grabbed to build what became my favorite AR. It shoots most everything 55gr and heavier sub MOA.

I loaded some 50gr Varmit Grenades using 23.0 - 23.6gr of Varget. 23.3 was the only load that shot sub MOA(0.9"). There was 1 that was 1.2, the rest were pretty ragged.

The main thing is this. Find the load that works best for your gun. It takes some extra time, but in the long run it will be worth it.
5 shot 1" group at 100 with a 9" twist dpms 5.56 top end. (75 gr bullets)
They track well out as far as I've gone, but I haven't put on paper past 100.
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