Seen more than one semi-auto that would have problems running consistently reliable unless CCI mini mags were used.
I'm just the opposite... My auto rifle and pistol misfire and jam all the time with MM. Put in the Federal and the problem goes away.
The pistol is the worse.. 2 in 10 misfire and 4 in 10 jam... put in the Fed and no misfires or jams. I shot just over a 100 rds Friday without a jam or misfire. I knew not to even try the MM, although I got some left, from times past.
Just different guns, I guess.
FWIW, the MM's shoot just fine in the revolvers, no jams no misfires. I cant say much for accuracy, because I'm not at all accurate with a pistol. Lock me in a barn and I couldn't hit a side!
