I'm driving a Winchester lever action (I think the model is 1894) and a Thompson Contender with a 16" barrel.
You have to have a hold on both of them when you let them go.
.45 is great for bullet casting and reloading, for anyone who works with it enough (bore/fire lapping and all). Veral Smith has many years of experience accompanied by close and concerned studies, makes great bullet molds and has written great ballistics information about lead bullets, barrels, etc.
http://lbtmoulds.com/moulds.shtml