tristar shotgun 20ga

I have a question that many of you shotgunners probably will offer an opinion about... The new Tristar G2 shotguns have labels on them saying to run a box of high powered shells through them for break-in. I bought one of them in 20ga and it is still new in the box at my home. Two days later I...

Kid has a nice wood and steel 20ga Viper with a 26" barrel. Fairly inexpensive new a few years ago. Probably 2000 rounds through it. Anyway, two weeks ago he closed the bolt while shooting trap and gun fired, slam fire, as the bolt was going forward. Shot shell ruptured, brass cutting his...