Twist rate

[mransley]

What twist rate 1/18 or 1.16 for 45/70 long range shooting contests

 

[CliffM]

IIRC the normal twist rate for the 45 cal. is 1:18 good for 500gr + bullets.
40 cal is normally 1:16 with 1:14 being fast for the longest bullets.

Cliff