searching for answers

Discussion in 'Reloading' started by Ridge Runner, Oct 17, 2010.

  1. Ridge Runner

    Ridge Runner Well-Known Member

    Dec 13, 2002
    Kirby built my 7mm AM in 2006, I quickly found that the max load for it was 115 gr of WC872 behind a 160 accubond @3700 fps, I backed the load down to 3575 fps with 110 grs. so it was just a bit sooty to give me a buffer for mild weather during deer season.
    I've loaded the cases 5 times, the rifle has never been less than exceptional. today for the first time in 450 rounds it pierced a primer, sending a spec of metal into a shooting buddy's cheek.
    was this due to fatigued brass or over pressure? 2 weeks ago I had the first cracked neck so I'm thinking its the brass is just too overworked and needs to be discarded.
    opinions please!