The "Butterfly Gun" has 70 butterfly and is 36 caliber. It's really amazing because it doesn't look gaudy.
Robin, I think he cut the design into the barrel, then under cut it somehow so that when he hammered the brass down, it went under the barrel kinda like a dovetail therefore holding it in place. I'm going over there tonight, I'll ask him.
If you ever make it over to this side of the pond again, you'll have to stay in Maryland for a couple days. I don't have a Hawken, but you could do some babysitting.
Chuck