These guns are junk! After 50 shots with 3" (12 GA) the piston rings blow off every shot. It costed me the biggest turkey of my life this past spring. I sent in back, they said that the rings were cut wrong, so they replaced "the bad" ring and sent it back, after i had to pay shipping, and on the first shot the "good" ring blew off!! I have now sent it back and they had better replace it or some one else will be getting involved. There have been so many problems with these guns that it is unbelievable. My return # was like 7004 on the first return and like # 7400 on the second, 2 weeks later. THat means that there were almost 400 returns in the 2 weeks. The first thing that I am doing when they send me the new gun is selling it, so anyone wanna buy a new unfired camo ALS 2100, 28" barrel?? I thought not. And actually they blew off after 5 shots but it was only once in a while until about the 50th shot, then it was every shot! Not just with the 3" with 2 3/4 high brass too! And this was with remington, winchester, and federal ammo. So it isn't just the ammo. Oh and when the ring pops off it prevents the firing pin from reaching the primer, so you can't shoot. And if the pin did reach the primer, then that would probably result in the gun blowing up like you say, because the chamber is not closed all of the way!