We have had issues over the years with various O/U guns locking up. The problem was the firing pins would hang up in the primer and not allow for the action to open. Happened a lot with the cheap Winchester Universal shells. I'd say any shell with a soft primer or an over long FP could do it. Same symptoms as your gun, top lever fully right and just a very small amount of movement when trying to open the action. I shoot a lot of Fiocchis and never had a problem, so, I'd say check your firing pins and even just shoot a few boxes of another brand of shell. Maybe your Fiocchis have a different primer for some reason?
|