Couldn't agree with you more, Ted. It is a quite lovely piece nonetheless. I personally kinda view something like that in the same vein as many modern 20's that have no real or honest need at their finished weight for the 3" chambers they are oft fitted with. My apologies to Francis Sell.
On pigeon guns, for the early perspective there was 'Blue Rock' and in today's, in the American sense anyway, there is Michael Ray Forehand as authors of note who can provide the interested parties with valuable insights to the finer points.
Lowell is perhaps a bit out of his element contemplating rings and such, "No offense intended, your Lordship." Oberfell & Thompson didn't begin to scratch the surface where vagueries are concerned. Hence the term "the luck of the draw"