I'm just starting my handload testing for my 7mm RM. I have 20 rounds through it with 168 bergers and varying levels of H1000. I got great accuracy from the 64 and 65.5 grain loads. BUT out of the 20 handloads, I had 3 no fires. I have 40 rounds of factory ammo through it with no problems so I assume it isn't the rifle. I'm using the RCBS partner press and priming with that little priming arm on the press. Using the Winchester large rifle primers. The firing pin is just barely making a dent in the primers on the no fired rounds. So I'm assuming that I'm cranking on the handle a little too hard and seating the primers a little too deep. BUT I also have very little experience with reloading. If anyone has any solutions or other ideas as to what might be my problem, I'd love to hear them!