looking for data, 220 grain RN 30/06

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you need to find your rate of twist, thats a separate thread on its own, theres techniques used to find your twist. 8 would be for heaviest bullets and 14 would be for the lightest bullets.
 
you need to find your rate of twist, thats a separate thread on its own, theres techniques used to find your twist. 8 would be for heaviest bullets and 14 would be for the lightest bullets.
Thanks I'll have to research this further to find out.
 
wouldnt want to stake my life on the 220 grain at 2300-2400 fps.

With those bullets, you don't need to worry. They're like little crossbow bolts and have taken the largest critters in Africa. Out of the .303 the long Woodleighs are legendary for killing power. You do not need super high velocity.
 
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