i just brought mine to the range today and shot about 150 rounds of winchester xpert hv. i had only 1 FTF, i'm assuming it's the round since there was a good size dent in the rim. however i got a couple of double fires. it was only the first 2 rounds of the mag. has anyone else had this problem. i'm guessing it's the way i loaded the mag. i took care when loading, making sure the nose of the round was up and gave soft tap on side of the mag before loading the rifle.