Twist rate also effects terminal results, fur damage with the same bullet out of 8t or 14t could be very different. Even same twist in 2 different rifles may not result in the same fur damage. I like max spin for varmints where mist and pieces are desired. For fur I want 1-3 inches of penetration for Fox, 2-5 for coyote. This may require bullets running at the slow end of their twist requirements. For me with 12 or 14t @ 22-250 tough to beat a Nosler 55 BT when you may take 300+ yard shots and want to save fur. I almost always take head shots on sleepers 225 yards and closer.