I just recently picked up a left handed long action trued and with a rifle basix trigger. I am planning on setting it up as a blind mag I wanted to do a short mag so I can set it up for copper and really hang those suckers out there to maximize capacity.What concerns do I need to adress to ensure that it feeds smothly? Also I know its not necessary and mostly just a cosmetic thing but it has the flat headed screw in the back of the bolt can I replace that with the allen head bolt in the back. Thnks for any help in advance and the reason I want to set up a copper gun is that I live in CA and would need it in certain areas of the state.