RE: cantilever barrel for my 870
I have one on my Mossberg. For some reason the old one i had the scope base got bent. I guess thee was some pressure from storing it in my closet but i got another one and just leave it off the gun in a soft case and havnt had a problem in 3 years now. My first one only lasted 1 season. It was hitting 13in higher then the last year with the same ammo at 100 yards.