Re: What caliber to rechamber to?
depends on what you want to do with it. personally, the 300wm is fine to stick with. i got a rum for a little extra ass. picked it up last spring and shot the barrel out already. granted i shoot matches with it, so i definitely melt the barrel, but thats something you have to consider. big mags are barrel burners. i plan on still keeping it a rum with the new tube, but will probably limit the amount of matches i do with it. its a beautiful hunting caliber capable of any north american game, and does fine at 1k, for as long as the barrel lasts at least. if you plan on shooting a bit of matches, you're probably better off keeping it a wm, and save yourself a couple hundred rounds of barrel wear.
If it were easy, I wouldn't be doing it.