Shawnba67
Member
I am trying to figure out the correct neck bushing size for a modified set of reload dies im making just upsizing 22-250 to 6mm250 a loaded round that in new brass measures. 267 at the neck. I. Thinking of reaming the neck to . 264 is that gonna be enough for proper hunting grade bolt rifle neck tension? (ido realize il be stuck with one brand of brass)