Thread: Twist Rate:Projectile Weight

Don't be too caught up in projectile shapes - it's the length of projectile for the twist that governs stability. Boat tail bullets have slightly less bearing surface than flat base meaning lower barrel friction, but have better ballistic coefficient than their flat based cousins. Some barrels just don't like boat tails though... 1-11 may shoot 165gr fine, it's close to the accepted borderline but I've had a 1-12 twist that handled them fine and another that didn't. Just have to try them to know.

165gr will produce more recoil than 150, but 165 will have less wind drift at slightly more drop for a given range. But, the big but, is the difference between the two different weights may be insignificant when compared to other factors such as stock design and rifle weight.