The 338lp savage 110 long action was built a little beefier than a regular 110 magnum long action. The bolt lugs are .550" thick instead of the regular .500", and the action had a little more material in it to beef it up for the 338lp cartridge. This might have changed with the 112 target model and others. Barrel tenon for magnums or the 338lp are usually 1.120" vs the 1.055" small shank. Building anything with the same case head dimension and volume of powder as the 338lp and 300norma in a smaller action and barrel tenon is a really bad idea. Its like putting your head on a pipe bomb with very little protection. Even the savage 338lp action and 1.120 barrel tenon is pushing it. Go with a custom action built for the larger cartridges with the .588" case head, or stick with cartridges with the regular (.532") magnum sized case head. I converted my 110 fcp hs 338lp to a 300wsm and kept the .550 bolt lug dimension for safety reasons noted above.