Thread: Fire forming 270 to 280ai

Today I got out to shoot the kimber with disappointing results.
Last night I loaded up 18 rounds.
Starting with new 270 brass I ran it all over the 3006 expander and then into the 280ai die until I could just chamber the case with a firm close.

I then loaded up 59gr of rl22 (4gr under book max) and a 140gr sbt

Today at the range 5 of the a of the 8 rounds fired cracked the case ( 2 of which broke in 2 as they were ejected).