Thread: High Pressure or weak firing pin spring

Hello Guys

I'm getting some primer extrusion back into the firing pin hole. The loads I've experienced this with are 41.0gns Re-17 behind 120 Amax's and 41.0 gns AR2209 behind 125 Noslers. According to Quickload pressures for both should be moderate (around 55,000 psi) and the velocities I'm getting correspond with what QL predicts. If I back off it reduces but there is still not what I'd think is a full indentation. I did change out the main spring with another I had but I don't have any"new" ones to try.

I'd photograph them but I'm a hopeless photographer.

Does anyone have photos of what they consider to be primer extrusion from a weak firing pin- I can't find much of any use on the 'net.

Thanks