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Author Topic: 223AI ??  (Read 463 times)

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Offline old coach

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223AI ??
« on: November 14, 2010, 03:05:04 AM »
I am going to have MGM build an Encore bbl in 223AI chambered for the Hornady Amax 75.
What length?
What  twist?
Anybody have a 223AI in an Encore bbl? How does it shoot?

Coach
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Offline Trebor Snave

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Re: 223AI ??
« Reply #1 on: November 15, 2010, 04:36:24 AM »
Can't help you on length, but I shoot 75's quite a bit in Service Rifle competition through a 1:7 twist.  You could probably get by with a 1:8 if you wanted to, but I wouldn't go any slower than that.
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Offline Anonym

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Re: 223AI ??
« Reply #2 on: November 15, 2010, 07:28:32 AM »
I agree.  Unless you're shooting extremely thin jackets, you can't "over stabilize" a bullet.  1:7 would be what i would pick for a .223, no less than a 1:9.  I haven't dealt with the AIs any though.  If you're velocity increase is too much, you may have to stick with a 1:9 (think 22-250 and a 1:12)

Justin
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Can't hardly wait on deer season and the 2016 Presidential Elections...

Offline 3leggedturtle

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Re: 223AI ??
« Reply #3 on: November 15, 2010, 09:36:04 AM »
Had a 21" 22 hornet bbl rechambered to 223AI  does one hole groups at 100 yards if i hold good 2" or so at 200.  Like it alot, MGM will just as well if not better
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