I started reloading about 6 years ago. I pretty much only hunt big game with one gun and I found a load I liked and I haven't changed it since. Now I'm helping a friend lean to reload and I remember when I was figuring my cartridge overall length I either read or was told to make the length just long enough so I could barely lower the bolt, then back off .05 inches so as to get an accurate round without risking dangerously high pressure by making the length too long. I was reading back through my books and couldn't find the reference. I was wondering if this sounds appropriate to you guys? Thanks for your help.