Check out this shotgun I just scored!

Read up on how to setup the recoil system. There is a setting for heavy and for light loads. If set for heavy and you shoot light trap loads, it may not fully extract and eject the spent shell. If set for light loads and you shoot heavy 2 3/4" shells in it, you can peen the receiver and damage the gun. I have a second year gun, (~1903) that was not setup correctly or the recoil spring was weak and the rear of the receiver is peened out from the bolt slamming against it. If you are going to use it much, I would recommend changing the springs in the forend and receiver.