Of course there would be torque to the right or left. And many other vibrations and harmonics as well. I think there was a good discussion about the dynamics of firing in "Shotgun Technicana" by Michael McIntosh and David Trevallion. There is a lot of movement going on even though the gun appears perfectly locked closed. I believe as Miller does, that most wear occurs from a lack of proper maintenance, i.e., lack of cleaning and proper lubrication of hook and hinge pin joint. But when contact points are pounded thousands of times with thousands of pounds per square inch of force, there is bound to be some slight deflection of metal. Even bearings that are filled with grease can suffer damage such as Brinneling, etc.
Last edited by keith; 01/23/17 12:54 PM.
