Sliver,

I once read in a piece on m/l shotguns that when POI is adjusted, as you described, that metal is removed from the side opposite the direction you wish to move the shot charge. The tome said that more gas would escape the muzzle at the point the metal was removed thus pushing the shot charge the opposite direction. Is that how you found it to be, or different from that? Always wondered if the article was right.

May God bless America and those who defend her.