I'm going to be ordering an XLR industries chassis for my savage 112 BVSS shortly. Currently the rifle is chambered in 300 win mag, but I'm considering doing a switch barrel setup since it seems pretty simple to do with the savage rifles. The XLR stock uses 300 win mag magazines from accuracy international. The mags will accept cartridges with a max overall length of 3.625". I'm looking for a .338 caliber cartridge that'll run at least 250gr, preferably 300gr bullets. I'm thinking about getting the dies and such to load the 338sin, but I'm open to any other ideas at this point. I'm basically looking to get as close as possible to the 338 RUM and still have a functional repeater.