so a few weeks ago i got a new Shield in .40 and finally got out to the range today. Well, it shot great, when it shot. First loaded it with WWB and the first mag shot fine 6rds. Next mag i had loaded 6rds Winchester PDX1, 2nd shot failure to feed. and slide locked back, manually released the slide forward round fired and then the from then on every other round was a FTF. the Primer was struck it just did not fire and it didn't matter what kind of ammo i used...federal fmj, wwb, winchester ranger, winchester pdx1. for an example 2 would shot then the next one would be a dud, next one would shot the the next would be a dud...the primer does look like it was struck off center. Actually with each mag i would say that I had 1 or 2 malfunctions a dozen or so in total. What do you guys think is up?