Thanks, Pete! I'll take a look.

I recall that at one time there were ML guns popular in some aprts of rural America that were known as "ball and shot" guns. They apparently were rifle-like but smoothbore and could be used for large game (with balls) and small (with shot). Knowing a little about country people (used to be one), I suspect that the shot usage was mainly potting stuff on the ground and flock shooting at pigeons, ducks, etc. so the rifle sights weren't much of a handicap in using shot.

But the "punkin balls" I'm talking about were once factory loaded in modern (paper) shotshells. Looks like the BP brochure will tell all!