Re: loading for browning bar 270win.
Yes, I reload for a BAR in 270. No crimping, and bullets don't change length after being magazine fed by firing previous rounds, so I see no reason to introduce another variable like crimping.
My question is what powders / bullets to you find to be accurate shooters in yours?
I think auto loaders limit powder selections because of burn rates and pressure on the gas system. Its much more complicated than a bolt gun, and seems persnickety. So far I have used W760 and H4350, but am thinking of going slower to increase velocities. I can't get over 2900 fps on a 130gr bullet without sacrificing accuracy. I've only loaded 130s of various kinds. Hdy SP, SST, and Barnes TSX all shoot pretty well. <1 MOA if I do my part.