I just bought a savage 338 lapua magnum. Got all my reloading stff and thought i was ready. Got ready to prime so i checked the lee shell holder with my cartridge before slipping it into the auto primer. Fit perfect. I then slid it into auto primer and then tried to insert cartridge and the darn cartridge wont slid in. Uggh. Anyone un into this. Sheesh. I need to prime my new catridge but now it looks like i will have to find another primer mechinism fot this.