JohnM, Thanks for the reply. I had forgot to mention that I had installed a JP Fire Control system, hammer and trigger; it seems all is adjusted exactly right with a nice 3 1/2 pound trigger, very little creep, and very little overtravel; however, now that I've looked at it again, after reading your reply, I can definitely see how the hammer may not be held down enough by the disconnector on the return part of the cycle. This bending of the retaining pin only happened once and the rifle shoot without incident the rest of the morning, so I guess I will keep things as they are to see if it happens again. If it does, would you suggest removing a little of the upper corner of the hammer? I don't think this would bother the contact with the firing pin; the only other thing I can think of is to add material in the grove of the hammer where the disconnector holds it. I would rather not disturb the trigger system as it is just as I wanted it, and I put the screws down with 'red' loctite, as suggested by JP. - [%(]