Hi yall,
I am in the process of building a 260 AI rifle, and I have been pondering how I can fire form brass, get some trigger time, but not waste barrel life fire forming brass. I was thinking a good solution would be to fire form the cases using a GC cast boolit. I also have a canister of pull down powder from Bulgarian heavy ball 7.62x54r. I have used this powder to load new x54r brass with new bullets using starting charges and working up in small increments. The powder seems to be in the 4064 - 4895 range. I was thinking about starting with a 30-31 grain charge and a 135 grain cast GC bullet to fire form my brass. Any thoughts?
Anyone know what pressure is needed to fire form brass?
Thanks!