Today I started out at the club shooting my 1907 Joseph Lang with the Baker single trigger that they used in their guns. Straight out it would not fire the second barrel. (Last time I used it, it worked flawlessly). On a few occasions I had my friend shoot it and it did fire the cecond barrel but not often, maybe two times.
Once I dry fired it, put two shells in and it worked fine. Then it stopped all together. It's going to my gunsmith next week but just curious what your thoughts might be. (I hope not expensive thoughts)
