Yea, I have to agree with some on here. If you have three duds in a box, chances are you might have some headspaceing issues. Not too uncommon. If I was you Rod, I would take that gun to a gunsmith and have a no-go gauge put in it. 3 rounds out of a box? I don't like thier ammo any more than the next guy, but I have shot thousands and used kleenbore primers for too long to hear that.

Sure you might get some ammo with different shoulder lengths and mask the problem, but you might be just that masking a problem.