I was at the range this morning and had 85 gr. of 7828 behind a 180 gr.SST in my 300 WBY and I shot the first of five and when I open the chamber the shell came out and there was not primer, the headstamp was imprinter on the bolt face and I never found the primer. The rifle was fine I didn't shoot any of the other four but did some lesser loads and everything was good.

My questions is this I have shot 85 gr. before and had no problems what so ever it was in virgin brass though. This is the second loading of this brass could that have caused the problem? If not what?