Went to the range today to shoot my new AR for the first time. Picked up 500 rounds of Wolf steel cased ammo for $120 at the local gun show last week. I managed to get through 3 full PMags and then on the 3rd round of the 4th one, FAILURE. Gun jammed, and the bolt wouldnt move. I managed to get it apart and this is what I found Once I was able to get the case out of the barrel, it looks to have bulged up and stuck itself into the barrel. I was told the cheap Wolf ammo I was using is the cause of this. So now Im stuck with around 400 rounds of this stuff left. SOOO, do I keep shooting it? Was this just a bad round?? OR should I get rid of it and not risk it?? What other brands do you guys recommend for cheap plinking ammo? Ive seen Brown/Silver Bear ammo pretty cheap as well, any better?? Any help/comments will be appreciated guys. Thanks.