Still fighting issues.....

[Randy99CL]

I am certainly no expert in this area however I had this same issue when I built mine. I brought the rifle to my custom barrel maker and he polished the sharp edges off the extractor. Every shell extracted perfectly after that.

I like Johnny's Reloading Bench videos on youtube and he did a series on reloading for his Grendel. He also had problems with the extractor; he was getting inconsistent ejection and it was marking up the rim of the brass. He ground off the sharp edges with a Dremel and it cured the problems.
I think it was the third video in the series: https://www.youtube.com/watch?v=kMrMUyyW...jTRb-JJmto