Quote Originally Posted by kennyc View Post
3 shots aren't a useful group, you need 5-10 to really get an idea of the group spread and size, sort out what is causing the flyer (if any once you go to larger groups) changing the cartridge length isn't going to fix problems with technique or the rifle setup
so when you do your load development you do 5 to 10 shots each powder charge and then 5 to ten shots each seat depth ? 3 shot groups are fine to scan for optimum powder charge and seat depth. then when you find those nodes fine tune with 5 shots.