So a few quick questions on reloading. I hear it is best to start with 6mm Rem Winchester brass rather than Remington? I also hear that many size down 7x57 Norma brass as well. How successful is this? I assume you start with a 6.5 die to start the sizing, and then finish with a 6 AI die? Nick size? .274 chamber, right, so which 6 AI dies work the best? Custom route necessary? Thanks in advance. I am pretty new to wildcat reloading. Excited, but a greenhorn.