RE: mossberg 500 vs. remington 870
Not saying either one is better, because between my friends and I we have both and both have held up for years. Just to point out though, my 870 super mag has a scope on it but not a cantilever. I got a saddle type mount from Leupold that if you remove the screws in the reciever, it "saddles" over top (connecting on both sides, not just one) with screw supplied with the mount. It is very handy because I can switch barrels from my rifled slug barrel for deer, to my 26" Rem choke for Turkey and retain my scope on the gun for both animals. I think this is very handy. Just trying to show you another way of doing it.