I was shooting the firearm the other day with Winchester targets (Walmart ammo ) and noticed that that every now and then ,when the next round would cycle it would get caught up on the ramp ( sorry dont know the proper terminology) before entering the barrel. Sometimes I could go 3 mags without it happening and then have a problem with 4 out of 8 shots in the next one. I purchased the gun used and didnt realize till after that it did not come with the Wilson Combat mags that come stock with the gun. It came with 3 very cheap looking mags . I am guessing the problem is probably a combination of the ammo an the cheap mags can anyonre think of anything else it could be. Thanks