OK, I'll be a bit different here. I had an Interarms long action turned into a 358 Winchester by the folks at Pac-Nor. The did an excellent job. They squared up the receiver, worked the lugs to a flush fit and put on a 22" barrel. First time I actually shot it I took factory ammo and put a 5 shot group right at an inch. I have reloads now that have tightened that up to .6-.75". Am I pleased? Yes. Very much so. I'll use them again the next time I'm going to rebarrel a rifle.
The calls for a re-bore are another way to go. JES does good work from all that I've read. If I were to re-bore a rifle, that's most likely where I'd go.
You can go on an elk hunt, 3-7 days or so of fun or you can re-barrel or re-bore and take the 'new' rifle on several hunts in your future.
I'd go with either the re-barrel or re-bore myself.
