How 'bout a picture of the rib on your gun?
Looking about the web that Al Gore invented, I find no models of gun as you have described yours, with a true, swamped rib. Most have a concave rib, like this one:
http://www.gunsinternational.com/guns-fo...un_id=100785485We do have people posting here that don't know the difference twixt a concave rib and a swamped rib.
Trust me, they are not the same.
This is a link to a gun with an actual swamped rib:
http://www.gunsinternational.com/guns-fo...un_id=100797320 I've shot plenty of birds, clay and feathered, with swamped, concave, flat file cut, raised, or, sans rib, and can't understand what difference a rib should make to ones shooting.
The only thing
I despise are mid beads, colored beads, or bulgy choke type devices.
If you are looking/thinking about the rib, you will miss.
Best,
Ted