One other comment on the swamped ribs. My pivot lever 10 ga Lefever E grade #10,515 has a concave rib, but not a swamped one. There are really I believe 4 definitions to describe a rib shape, straight, swamped, flat & concave. Straight means it is straight from breech to muzzle, swamped means it drops down between the barrels between breech & muzzle. Flat & concave apply to the width cross section. Thus either a straight or swamped rib can be either flat or concave.


Miller/TN
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