Thread: Litz - Ballistic Performance of Rifle Bullets 3rd Ed

@ebf the barrel twist and rifling quality its an internal change not an external change.
like worst case you shoot a 75g from a 1-12 twist 223 with near worn out barrel the bc will be terrible because ofthe poor stablity .vs new barrel 1-7 twist 223 shooting same 75g will probably be better than the average bc.

changing the twist rate on a app is only changing it calculation of spin drift and AJ not the stabilty of the projectile causeing an increased bc over tha advertised bc.