I really like that one, well I like all the guns you make!! Is it oct/round, is it rifled? I don't see a rear sight....ED
Its oct/rnd smooth bore. It has an interesting story that goes with it. I bought this Colerain barrel and it's stamped "20". I built the gun and sent it off to the owner. He could not get it to shoot well. He was talking to Rice about his problem and Rice ID'd the barrel as a 16 bore, not a 20 like it's marked. So Rice made another barrel in 20 bore. That "should" drop right in.
I have switched barrels before, it's never been as easy in practice as it has been in theory.
As an aside, I ordered 2 long swamped .32's from Rice . They were both stamped 40 on the bottom but were actually .32's. I guess you can't trust what you read.