When shotguns discharge at closing the problem is with poor sear/tumbler fitting, not the lack of an intercepting sear. A properly fitted sear is totally safe without other "devices". No reason for a gun owner to have a box lock, or a sidelock without intercepting sears, that is unsafe. You can have light trigger pulls and have them totally safe at the same time. I've got lots of them.
If you're unsure about the sear/tumbler engagement on a gun, check to ensure it is unloaded then push the safety off and bump the butt on the floor (on a rug to prevent butt damage) to see if it discharges. If you can't make it go off, don't worry about it.
I have a couple of checks on sear engagement and hold.
Make sure it is unloaded, close the action. With the safety on, pull each trigger, fairly hard, and observe/listen. Move the safety off after pulling the triggers with it on, observe/listen. Leave the safety off, and open the gun, observe/listen, and, close the gun, with the safety still off, observe/listen.
Stan, I’ve always done your test with the gun in my hands and using my free open hand to give the gun a tap on the butt, with the safety off. Same thing, only different. Most shotguns have a butt that is concave, and I try to hit the stock dead center, hoping to avoid a broken toe-seen that movie before.
Best,
Ted
