If it shoots where you want, and your pupil is just on top of the rib, or even higher, that should be OK. If your eye is low enough so that someone looking back from the muzzle could only see part of your pupil, then you would be giving up some target visibility. You would see some rib if your pupil is completely on top of it, even if the bottom of your pupil is just even with the top of the rib.

A SxS with big fences tends to block the view when mounted. Seeing a little more rib might help seeing the target. A technique that involves firing just as the mount completes could help, too.

Last edited by J. Hall; 09/04/07 11:12 AM.