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Twist on 223 ammo

ret96ret96 Member Posts: 2 ✭✭
edited February 2007 in Ask the Experts
What is the best twist for 55 grain 223 ball ammo? 1 in 7 1/2, 9, 10, 11, or 12. Who makes a rifle in that twist? Thanks.
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    dclocodcloco Member Posts: 2,967
    edited November -1
    11 or 12 would be just about right. 10 is getting a little fast. 9 is fast.

    BUT, this does not mean a 1:9 twist barrel will not shoot light bullets well.

    My Savage shoots 40 grain VMax to 69 grain Nosler's in great fashion.
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    B17-P51B17-P51 Member Posts: 2,207 ✭✭✭
    edited November -1
    +1 dcloco
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    mogley98mogley98 Member Posts: 18,297 ✭✭✭✭
    edited November -1
    Fulton Armory has a great explanation (too much really) on their web site, boils down to the fact that no gun can shoot every weight of bullet, every density, every length, every type of material construction, etc. consistently the BEST, so Gun Makers attempt to build barrels that can shoot all the ranges of the caliber reasonably well. If you can find a specific round that shoots tighter groups in YOUR gun then that is what you should shoot for accuracy but no one can tell you what bullet that is without testing.
    Why don't we go to school and work on the weekends and take the week off!
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    sandwarriorsandwarrior Member Posts: 5,453 ✭✭✭
    edited November -1
    ret96,

    If you are going to exclusively shoot 55 gr. ammo then 1-12" twist is optimal. Some versions of the Remington 700 still have that twist.

    However, it is likely that during your tenure as it's owner that you will want to try heavier bullets. That requires a tighter twist. You can stabilize 62/63 gr. bullets with a 1-10". You can stabilize 68/69/70 gr bullets with a 1-9". To stabilize 75/77's requires at least a 1-8" for 80's a 1-7" for 90's a 1-6". Now, these are not hard fast rules but generalities of what is needed to get your bullet to stabilize. You will normally only need to go to a 70 gr. bullet to extend to the maximum range than a normal shooter would go to with a .223. And as dcloco pointed out overspinning a bullet isn't going to hurt it...at least in the short run. So, if you are looking at a .223 I would suggest a 1-9" twist. -good luck
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    mondmond Member Posts: 6,458
    edited November -1
    imo 1-9 is satisfactory & acurate to 150 yds +
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    tsr1965tsr1965 Member Posts: 8,682 ✭✭
    edited November -1
    The 11 or 12 will do everything from the 35-55 grain. The 1 in 10 is a do all twist for 40-62 grain, and the 1 in 9 for 60, and the 1 in 7 for the big 79-85 grain vld bullets. that is a shame one has to have all those rifles to cover all the diffirent shooting situations with the 223....but i love it!
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