Thin cupped primers are not your problem. Think about it, how often do you hear about slam fires with the gold WW primers or Federal? Not very often yet you think he had 3 right in a row? Not happening. I've heard of 2 or 3 and rost was the one who told about those.

I've fired thousands of Fed 205Match primers and gold and silver WW's without ever having a problem. And that's with heavy buffers.

Bad disconnector or trigger is set too light.

Last edited by TWR; 10/08/15.