I have a custom 338 win. Set up for elk or safari hunting. Short barrel, high rise iron sights with a 3x9 leupold . This was a gift. Its a great set up, but not what I want. I do like the larger calibers, but I want something I can take out to a grand with some authority, but still want to be able to hunt with it. I was thinking rebarreling (heavy 28 inch) and stepping up to a 338 rum . Is this possible with the mauser 98? Any thoughts on this ? Or other caliber suggestions?