Forums › Forums › Technical Articles › Twist Rate and Bullet Length › Re: Re: Twist Rate and Bullet Length 37L1 Member January 5, 2018 at 4:53 pm 1 Bullseye Will the T3 1-11 twist rate stabilize the longer 180 grain copper bullets? ie; Federal Trophy Copper. I cannot find it's length to use in the stability calculator. Yes.
