Recently, I ran across a guy that had a Remington 700 in .300 Win Mag. He won the gun in at a compnay event in some sort of raffle and had never even taken it out of the box. He only wanted $400.00 for it, so I snapped it up. It's a larger cartridge than anything I would normally consider, but I just couldn't pass it up. I'd like to build a target rifle out of it, and have been intrigued my .338 caliber stuff. I know that bullet selection is getting better in that caliber. I'd like to put a Kreiger barrel on it and was wondering about haveing it done in .338 Win Mag. Are the cases the same, or do you have to modify the bolt face and extractor? Also, how much more recoil will the .338 Win Mag produce over the .300?