I am planning my work for the winter and my next project is a 95 mauser with a barrel (was a 30-06 cut at chamber leaving .455 to start with). I thought I would chamber this one for 300 savage but that cartridge looks boring to me in my present emotional state. I have plenty of 303 reloading goods and I would love that cartridge in a .308 bore. I know this whole deal is screaming 30-40 but I don't have those dies. Any one do the 303 into a .308 bore?