I was on 8 firings on the last batch of 100 pcs on the last wsm I had. I have no complaints with the bertram.I’ve looked into the Bertram, but Ive seen mixed reviews? I’m using FC brass and I hate it. Super soft. I was able to get the 200.20x above 3K but got scared and back it off to 2930. If you recommend Bertram after firing a couple times let us know!