My Hawken has a Bob Roller trigger and lock, same thing. I have an H&H barrel. Had to call and convince Bob to make the parts for us. He was disgusted with American shooters being cheap and was only making the parts for Germany at the time.
My flinters can go off with a breath of wind.
Worst triggers to work were old pre 64 WW rifles. I did it then too. Blink and the shot was gone!