Saw a Browning Citori 525 stick on the top or second shot Saturday. I was not shooting it but the shooter shot the first clay and upon pulling the trigger to shoot the second clay nothing happened when he pulled the trigger but said it "felt" funny or a very different mushy feeling and nothing happened for about 2 seconds and then the gun discharged. It did this 3 times during the sporting clay round. The above instance was the worst. The other two times there was just a slight .5 second delay. So is the firing pin getting stuck and needs to be cleaned or what exactly needs work? I have really never cleaned my internals on over under shotguns so not really sure what to work on here. Thanks
Most often this has to do with crud/oil slightly impeding full and easy movement with the trigger and/or inertia block.
If you can remove the buttstock, do so and manually work the inertia block and trigger. The both should move quickly and easily into position.. If not, brush down the internals with mineral spirits then blow everything away with compressed air.. Try the movements again. You should notice much easier/freer movement and a fast reset of the trigger and inertial block..
DO NOT APPLY OIL or lube to any internal parts.. They must remain clean and dry.. Only places lube should be applied is to the sides of the monobloc, pivot pins and ejectors..
Replace buttstock and test fire..