i am thinking that it must be me, but i am hoping that maybe it is not. i have been trying to develop a load that my 264 win mag likes and i get the same type of group everytime. i get two bullet holes almost touching but a third an inch or more away. i am only shooting 3 shot groups right now as i work up in charges with a powder that i do not have experience or load data for. i just yesterday finished fire forming all my brass. it appears that the chamber is quite large as the neck is noticeably shorter after firing, it looks like the shoulder is being pushed forward about .030. i am hoping for better accuracy when i have brass that is chamber sized.
is this phenomena most likely shooter error?
is this phenomena most likely shooter error?