I don't recall if the article I mentioned was written by Roger Barlow or not. The gun itself was on display in a Belgian Muesem & was not in the hands of the author whomever it was. This would of course agree with what Ted said, I was thinking an earlier date, but could well be wrong on that as I don't recall seeing more than one such feature. I also was thinking at least a 16 & quite possibly a 12, definitely larger than a 28. Roger did write extensively about using a 28ga Darne, but it was just a 2-shooter. I also recall an article of his entitled one, two, three, four; in which he described a shotgun having each of those numbers of bbls. I don't recall the one & two now, but I seem to recall the three was a Dickson & the four a Lancaster.
