I don't own one but I had a good friend who hunted with one when I was in College....here's what I remember of the gun:
The gun was made in Japan (SKB?) with an Aluminum receiver and the Centurion II, which is what he had, had a 3" chamber. I remember that because I asked him as we sat in the cornfield waiting for an evening flight of geese. I had my dad's Remington model 11 Sportman. The Centurion II will have that name stamped into the left side of the receiver. Those guns also had problems with the action bar slide assembly breaking especially with the heavier loads because of the quality of the stamping and also because there was no recoil buffer in the mechanism. I'd be leary of that gun only because if it does break, you may not be able to get parts for it. He ended up selling the gun for a Beretta 301.