Anyone have a primer go off while seating it? I recently retired my old RCBS Rock Chucker and bought a new Rock Chucker Supreme. I have pressed several hundred primers large and small with the new press. Something seemed wrong from the beginning. The primer seater would sometimes stick in the shell holder, but just a little. Last night I was seating primers in .40 caliber brass. Suddenly I noticed a primer seated upside down. Then another and then the seater was sticking badly in the shell holder. I replaced the seater assembly with the old one from my old press. The first primer I tried to seat went off. I wear eye protection when seating primers and now I think I will wear ear protection too. I have sent for a Forester Co-Ax® Primer Seater Co-Ax® Primer Seater w/ E-Z-Just Shell Holder Jaws - Forster Products I watched a You Tube video and this primer seater looks like it should work really well. I have reloaded thousands of rounds over the years and this is the first time I ever had a primer explode in the press! In my opinion the design of the RCBS primer seater assembly does not really lend itself to efficiency. The result of trying to do multiple jobs with the same tool. I will never seat a primer with the RCBS Rock Chucker again.