Bill

Depending on your size a rail mount will allow for more adjustment front to back. The area that can hold bases is very tigh, close together, on a Double. This can cause problems with the adjustment turrets and moving the scope back far enough. If you are short this probably won't be a problem.

The Down size of the rail mounts is the larger, usually 30mm, scopes that they come with. I think the Leupold 1.5x5 is perfect for a 9.3, if it will move far enough to the rear for you.

I have a 1.5x6 Ziess on rail on a 9.3x74R. It is a wonderful scope but it is quite a bit bigger than the Leupold.

I hope, for your sakes Ray doesn't see this or he will stringhalter and keehaul you. Or something else bad.