jwp475
Not really. Its there, but I'm not really smart enough or have enough equipment (or time :() to know very much. What I do now is when I use a light for caliber bullet, I always use a fast to mid-range powder for that cartridge. Seems to work well enough.
Denton could explain this a lot better than me, he has 1000 times the knowledge on these things as me.
Charlie

The data and opinions contained in these posts are the results of experiences with my equipment. NO CONCLUSIONS SHOULD BE DRAWN FROM ANY DATA PRESENTED, DO NOT, UNDER ANY CIRCUMSTANCES, ATTEMPT TO REPLICATE THESE RESULTSj