I ran 3-4 mags through my Sig when I got it, all Wolf, saving the better stuff for later. Never had a problem, and I was actually ore worried about the mags, cuz I was testing the plastic mag that came with the rifle, 2 poly Magpuls, and one of the metal mage. They all ran flawlessly with this rifle too. Can't vouch for the accuracy at this point, it was about 20 out, north wind at about 20 (at our backs), had trouble keeping the paper targets up. Oh yeah, and it was snowing.
Typical ND weather.