When you shoot ammo of completely unknown origin through your gun, and then said ammo blows your gun up, it’s clearly the fault of the gun. The OP in the thread says that he acknowledges that the ammo was suspect but that the Beretta he nuked should have been “built better”.
I ask the question, exactly how much better? At the previous blog meet in Indy, I was talking to a guy who knows a thing or two about Berettas, and that they had seen frames with round counts in the hundreds of thousands, shooting 9mm NATO ammo. When you get into the world of gun show reloads, or mystery reloads from someone you don’t know or trust, you’re on dangerous ground right there. I’m not saying that you should only shoot factory ammo through your guns, but if you are shooting Santa’s Magic Reloads and your gun goes boom – odds are it wasn’t some design flaw in your Glock/Sig/Beretta that caused it.