Well, a while back many were concerned about their SBE II's jamming at different times. I wrote to say I had the same issues and was going to contact Benelli and send it back for warranty check.
My 'jams' included not loading up a new round, in some cases, kicking a live round out after the first shell was shot...and stove piping of a shell.
So, I sent it in after an easy phone call and getting their authorization. The gun retuned with a complete invoice on what they did:
They replaced the Recoil spring inside the recoil tube - which is inside the stock and they replaced the ejector spring as well.
Then, they adjusted the Ejector and the safety and the forend...and completely cleaned the gun.
The forend adjustment is to make it easier to remove and put back on. From the factory it does not come off easily and they do this adjustment on all guns they work on so it can be removed easier.
They test fired the gun with 2 3/4 inch, 3 inch and 3 1/2 inch shells (Kent, Remington and Federals). I had told them I shot Kents and Remingtons.
They also told me the most important thing for the future is to oil the Recoil Sprig assembly. The recoil spring sits inside a tube...and on top of the spring is the silver plunger. You should not ever try to remove the spring, but do need to clean and oil it well to work.
The way to clean Recoil Assembly:
1. Take the gel pad off and take barrel off.
2. Use 13 mm socket with extension to remove the nut.
3. On the other side of the nut is a lock washer and shim, lock plate. Be sure to note how the shims are installed so you can put it back together as you found it.
4. Then you will have the tube (with spring and plunger inside)
5. Liberally use Gun Scrubber to spray inside the tube - Hold the plunger down 1/2 half way and get scrubber inside. Work plunger up and down a bit.
6. The bottom of the recoil tube has a small drain hole. Continue to spray gun scrubber inside the tube until you see the drain has clearer oil coming out. If black, it is not clean yet.
7. Then, place Break free oil or Rem Oil inside the tube and wait until you see a small bit drain out of drain hole. You want the tube to be oiled well.
8. Replace all parts AS THEY WERE....and clean the rest of the gun, barrel, bolt, trigger assembly etc - and good to go.
The recoil tube assembly does not need to be done each time but should be done once in a while to keep the spring clean and oiled.
I have not fired it yet but I am sure this will help me greatly.
My safety was also 'tight' and it took a lot to click it on and off. They adjusted that for me too.
Anyway, I promised to advise what happened and that’s it.