Originally Posted by Nitrah
My new 20 ga O/U has an inertia trigger and was working fine with both reloads and new factory shells. I tried using Briley 410 inserts and it wouldn't fire 2nd barrel. I took out the inserts and now it won't work the factroy new 20 ga shells either. Other than call factory , which I will do on Monday , any suggestions?

What brand of gun is it? Just curious. If you bought it new, I would send it back to the company. Or take it back to the store where you bought it . I would not fool with It.