Re: Ramshot Magnum vs. barrel life
A year ago or two, I had a discussion with one of the engineers at Western Powders in Miles City (sorry, I disremember his name), about this very subject. He assured me that Ramshot ball powders burn at a lower flame temperature than extruded powders, hence longer barrel life.
While I certainly don't doubt that your experience with ball powders vs. extruded powders is true, in fact, I agree with you! While I haven't had the chance to try Magnum yet myself, reports I've heard about Magnum suggest it is a very accurate powder. One day I will get off my duff and try it out. FWIW.