FWIW, I don't hunt much anymore, and not with a BPCR. I shoot competition exclusively. I'm not a great shot, and distance keeps me from attending as many matches as I'd like, so I try do whatever I can to assure that the rifle and load do their part, and to give me confidence. I mention this because I know that lots of BPCR shooters focus on hunting and don't shoot competition, which is fine.
I just want to put my comments and practices in context, not suggesting that they are "the best", or for everyone.
And I enjoy tinkering.
Paul
