Have you tried taking the bolt apart and cleaning the firing pin and channel it sits in ?

 

Have you tried taking the bolt apart and cleaning the firing pin and channel it sits in ?

I tested the gun with a 100% working bolt and still had the same issues. But no I have not, what should I check for?

 

Do you really mean that the "firing pin" won't reset, or do you mean that the "hammer" won't reset? If the firing pin protrudes after the firing of the first round, then something is wrong inside the bolt... possibly a broken firing pin or broken firing pin return spring. Either one is a simple fix by means of replacement of the broken part.

OTOH, if the "hammer" is not resetting, that's an issue with the trigger assembly. It could be a broken part or some foreign object/matter has partially fouled the trigger assembly. Swap trigger assemblies if you can't tell by looking at the one in the gun.

 

Witnessed a Browning Silver double fire a couple of times, guy that owned the gun had never cleaned it.
It was so dirty the firing pin was protruding all the time.
When the bolt closed with the firing pin protruding it would fire the shell.

 

What you had was a fan fire. A semi auto doesn't double. Has the trigger been worked on? Stock firmly into the shoulder? Are you fully releasing the trigger with the finger after the first shot? Using a bulky jacket or gloves? The more common cause of a fan fire is the shooter holding the gun too loose and the gun bounces off the shoulder and fires the second shot as the trigger rebounds back into the trigger finger.

 

What you had was a fan fire. A semi auto doesn't double. Has the trigger been worked on? Stock firmly into the shoulder? Are you fully releasing the trigger with the finger after the first shot? Using a bulky jacket or gloves? The more common cause of a fan fire is the shooter holding the gun too loose and the gun bounces off the shoulder and fires the second shot as the trigger rebounds back into the trigger finger.

Been shooting this gun for 2 seasons no issues; its not shooter error. Ive given it to another shooter and the same thing happened as well. Its something mechanical within the gun; as much as i wish it wasnt.

 

I would pull the trigger group and hose it down with CLP and blow it out. You may have something in the area of the sear and hammer. After you soak and blow off, with the trigger out, fire it a couple times catching the hammer so it doesn't fall all the way forward. If that doesn't work borrow another trigger group if you can find one.