As LeFusil indicates the issue is likely firing pin draging on the shells. Examine the spent shells and look for a mark in the form of a line from the center of the expended shotshell primer down across the face of the shot shell for a short distance. If you want to see the line more clearly (if the issue is caused by firing pin drag) use a black colored felt marker to ink the primer and face of each shotshell before shooting them. On shotguns without rebounding hammers, the cocking levers should immediately contact the tumbler cocking extension upon the process of the barrels beginning to move as the gun is opened--within about .005" of movement. This problem is a bane of many Fox shotguns; and many cocking slides on Fox guns have had to be replaced as they were not fitted properly when the gun was made.
On some shotguns the cocking lever pivot pin (screw) is worn and it is a simple matter of making a new screws to fit the hole of the cocking lever properly and the problem is corrected.
Last edited by bushveld; 05/17/22 09:52 PM.
