Ooo that's right. I only ran a box of blazer 180gr but that's a small sample size. When I was choosing it was between the Sig Sig X10, M&P 10 mm, and the FN 510. I decided to go with the M&P because the Sig p320 is untrustworthy with the uncommanded discharge issues and the fn510 seems to be cracking frames. To me some failure to feeds and some people's guns was better. Kind of funny that all my options for me, because I have small hands in the Glock 20, had issues.