Many 375 H&H have barrels that are both too long and too large in diameter. The .375 H&H really doesn't need more than a 24" barrel with modern powders, and 22" is not even too short. And if you apply the rule of thumb for .15" minimum barrel wall thickness at the muzzle, you could go as thin as .675". You could get the barrel turned down, but I think you would be money ahead by going with a new barrel. Lothar Walther sells some "prefit" barrels that are a really good value--you might look at them. If you install a new barrel, you will have a gap in the barrel channel. You will need to either put up with it, or fill it with a dyed bedding compound (which if done well, does not look all that awful.)

You do not need a secondary recoil lug, assuming the action is bedded correctly. You could even install a hidden crossbolt (and it may be that your action already has a crossbolt.)

You will need to get the barrelled action reblued, of course.

You might contact jkob who posts on here. I think he could install a new barrel and whatever sights you were interested in.

Last edited by utah708; 02/06/18.