So I want to build a savage rifle but with a short tube. I'm thinking under or around 20 inches and want to launch something big and heavy. I have a savage long action. What is the 338/300 wsm you guys are making in a pistol? Are you guys shooting the 338 300grn smk? Do you think it would feed from a magazine? And finally what kind of velocity would you expect from a 20" tube. Any other chambering suggestions.... Looking for a long range elk and black bear gun that can be packed around the mountains.