Recent content by Pbairborne

Now I think I understand your problem better. It seems that you are getting some unusual signs. Cases being ejected farther than usual might indicate higher than normal slide speed. And you are seeing that where there should be a dent in the primer from the firing pin, that depression has been...

Here's a flattened primer. It's a 357 and not a 40, but I couldn't find any of those.

For 40 S&W, Hodgdon shows the starting load for 135 gr bullet to be 8.5 grains and the max load to be 11.5. So at 8.8-9.9 grains, you are toward the lower end to mid range of manufacturer recommended charge weights. And your primers don't look at all flattened to me. Have you chrono'd the load...