I need some input on a reloading problem. I reload 6mm Remington for one of my rifles (Ruger 77, MkII), and in my last two batches of 20 cartridges I had a few that were difficult to chamber. Each time, out of 20 cartridges maybe 5 were hard to close the bolt on. Some almost wouldn't close, and others were just slightly tight. The basic steps in my reloading process are: 1. Decap; 2. Collet sizing die (sizes only the cartridge neck); 3. Dead length bullet seater die; 4. Factory crimp die. All of the dies are Lee brand.
My brass has been reloaded about 3 times, and I annealed the necks after the second reloading. My loads aren't especially hot, kind of mid-range according to the manual. I'm thinking maybe the shoulders of the cases are stretching and causing the tight chambering. Following that line of thought, perhaps I need a full length re-sizing die. ??? I welcome input from others on this. Thanks!
