Search:

low load the 7RM and there will be exactly that as well

just cut it short and suppress it if you want a bush gun, you plan to ditch the barrel anyway why not use it?

Be rediculas to change a 7rm to 280 ai
Think exactly the same except a few hundred feet per second slower

Lightly load the 7rm and its there

Otherwise you'd have to be crazy

nope the bolt face and feed ramps and mag follower would need adjusting (correct me if Im wrong)

buying a new (to you) rifle will probably be the cheepest option, long action with a magnum boltface and magnum mag follower is only really good for a magnum or shortened magnum case,
the pill you...