I'm brand new at reloading, a friend of mine convinced me to try it he's been bugging me that my new gun(300rum) is a baby gun compared to his 300 weatherby but anyway that's a different story! what I was wondering I'm looking for what works the best for this gun? What kind of powder?lead?and what load? thank you any help would be great! P.S. I guess while I'm asking what is the differences between the 300 rum and the 300 weatherby?