If you don't want the gun to go off, keep your finger off the trigger. Better yet, leave the chamber empty. Anything is possible. yanking on the trigger of a cocked rifle is asking for trouble. Parts break or may not be set correctly to begin with.
I had the hammer break on a Browning A5 Light 20. Thankfully it was pointed safely because when the bolt was released, the hammer broke an followed the bolt, firing the shell. Seems that some of the guns in the 60's had the hammers lightened by drilling holes, which when hardened and not dressed correctly, caused stress risers. 55 years later, it came back to try and bite me.
