Martin, Those old hump-backs are amazing. Years ago duck hunting, I complained to the fellow with me that my model 11 seemed to have an awful lot of kick to it. Being the observant genius that I am, I didn't notice that I was feeding it 3" mags. I don't know how the heck it was ejecting, but it got them out of there. LOL. Great memories of days gone by, some I should forget I guess. Have fun, one cement head to another. Bob