Your 16 needs help. Not sure why it would trip both sears but that remains dangerous. Old single barrel "Long Toms" can be notorious for terrible recoil due to their rather unforgiving stock angle, too. I bought a used Beretta double which had been imported from Europe and tried about a box and a half of light trap loads before I had to quit it kicked my cheek so hard. Was my first (and last) trap shooting experience. I took the gun to a 'smith (formerly of Beretta USA in Accokeek, Maryland) and he had me shoulder it. Viewing from head-on, he told me what my trouble was. Gun was cast-on (I'm right handed) and had a long toe, making it swivel up and left with each shot. Coupled with a near-splinter comb, it would pivot right under the cheek bone every time. (Went in to work the next day and everyone thought I had been to the orthodontist.) He steamed/bent the stock, added a Pachmyer Old English pad and tamed her right down. Cheek still feels it on cold days and after shooting springers. I can't shoot shotguns any more due to eye problems but I still have that one. It's purty.
