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.223 bullet weight

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Old 06-30-2012, 12:16 AM   #11
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Originally Posted by AgentTikki View Post
this a general rule of thumb

gracious made by Fixer (on this forum)

.223 bullet weight - General Rifle Discussion

Less than 55 grain requires less than 1:9 twist. 55 would probably be better with 1:10. 1:9 is best on average for 55-62 grain. I lean to 1:8 for 62 gr. and 1:10/11 for 55. Less twist for less. 1:7 is specifically designed to handle up to 77 gr. NATO tracer rounds. I don't shoot those. Not a fan of 1:7 and with one I believe we really need to use 62+ gr. heads.


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Old 06-30-2012, 02:27 AM   #12
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I shoot 75gr BTHP match bullets out of my 1-9 twist Savage 12 FLVSS with a 26" barrel,and always have.It is the absolute most accurate load that I've ever shot.I have most groups (5 Shots)when I'm on,shoot in the .24-.35 range,and have shot in the .16-.20 range a few times when everything was just right.
But the same gun really opens up when shooting 75gr AMax's,but they are a longer bullet than the BTHP's.
My RRA 20" Varminter with a 1-8 twist loves to shoot the 75gr AMax bullets.

Both guns shoot 55gr/60gr/65gr/and 70gr bullets very well also.
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Old 07-01-2012, 02:36 AM   #13
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Each Rifle is different. My 1:9 CZ 527 shoots 52...65 gr great. Have not tried heavier. Maybe the 24" barrel has something to do w/ it.
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