ever see a nice gun with a bulge in one or both of the barrels just in front of where the choke tapers start? this is usually a result of shooting steel shot. seems like most older guns have barrel steel that is too soft to allow for the steel shot load to pass the choke constriction. i see this mostly with guns made prior to the late 1980's, particularly those with full chokes. i have also seen a few pre ww2 made guns with scored bores. this is caused by hard steel shot coming in contact with softer steel barrels. your experience and comments?