I know this has been asked over time, but I'm sending my action out to be re-barreled. I'm interested in. The 300wm, 300rum an the 338rum, problem is I keep hearing how hard it is to find brass for the Rums, which the 338rum is my first choice. . What r all of ur thoughts on which to get, I'll be reloading, punching paper at distance an possibly elk etc.....