A buddy of mine bought a Remington (quite a few years ago) in 8mm and then gave it to a gunsmith (who used just the action) who built him some wildcat round. Now this guy doesnt get a thrill unless he is shooting 300-500 yds across corn fields. He is a very good shot. I do not know the caliber he is using but he has to form his own brass and of course load his own shells. I think he shoots a 140 gn bullet. Now he is finding out that there are several guns out there that will do what his will do and you can use factory ammo. I think he had about 2700.00 into the gun.