I've shot all 3 of the .338's you mention and I'd go with either the Timberwolf or the TRG-42. It really depends on which one you feel best behind. If you can afford the .50 for fun, grab it, otherwise spend the money on .338 ammo. And don't waste your time with any of the wildcat or "improved" stuff. Where you live ammo is hard enough to come by. You want something that, if need be, you can run factory ammo through.