Might be best to post at the gunsmithing site, but here goes... Yesterday, my Browning 16 ga Lightning Feather would not reliably fire the bottom barrel. Top barrel fired hull showed strong/deep firing pin indentation on the primer, bottom barrel would snap and make a very weak indentation on the primer. Moving the unfired case from the bottom barrel to the top barrel resulted in a positive fire - the problem was not the primer or ammo. A little "on site remedy" was attempted... we blasted compressed air down the firing pin holes in the face of the receiver, then dabbed a little Kroil over the pins, then dry-fired the bottom barrel a few times (ouch!) and everything worked fine (good strong indentation and postive fire) except for one snap about 2 rounds later. Then, It functioned fine after that until we finished our last round of psycho sheet... Any gurus out there who know what to attribute the malfunction to?? I can get a "go over" on the clays field for a malfunction, but my dogs don't forgive as easily - I want to address this. Any help always appreciated. thanks.