if anybody else has ever used the little "notch" on the top edge of the receiver of their 220 as a crude sight for slug or buckshot shooting?
I realize it IS crude, but "sighted in" my 220A adjustable choke 20 guage with Foster-type (Remington "Slugger") slugs one deer season back in Vermont in the late 1980s when it was the only gun I had that was deer-legal. It made a 3 1/2"-4" group of 3 slugs about right on for windage and 3" high for elevation with the shotgun bead centered in the "notch," which I figured was OK given the VERY short ranges in the brush and bramble jungles we hunted. I (perhaps fortunately) didn't get a shot at a deer that season and replaced the 220 with a proper deer rifle the next season. But in theory it should have worked at those short ranges. I had opened the Savage variable choke to the most open setting, true cylinder bore.
Given that many single shot shotguns in the past and a few in the present get used as "all-purpose guns" by guys who owned only one gun, I suspect that at least SOME 220s have been used as deer or hog or bear guns this way. Anybody have any knowledge of that?