So I am ready to purchase myself a new rifle to up my collection to four (.45 A.C.P DPMS .308 Bushmaster .223). I am really looking hard at the savage model 12 VLP in .308 and 300WSM, and the Savage 116 in 300 win mag. I am curious as to what the barrel life is expected on a 300 win mag, and 300WSM, also does the heavy barrel benefit any in the larger calibers. I was told that heavy and long barrels are the way to go but am starting to wonder if this isn't the case in todays rifles. My main hunting species for now are deer, coyotes, and paper but would like to have something that will work well when I go on a elk or moose hunt. Any help is much appreciated.