Mike, when it comes to Jeffery shotguns and rifles supposedly the bowed action back is the tip-off that Leonard made the gun. At least that's what I've read.

I first came across it in a Sherman Bell article. It especially caught my interest because my 12 bore Jeffery's action back is as such. Later on a member here corroborated this as fact as well when he commented on pictures of my Jeffery that I'd sent him, and then I read it somewhere else. I believe it was a DGJ article but not by Bell.

I brought this up in a post years ago and a couple of our British members chimed in their agreement of this "fact" as well as a whole lot more information on Leonard/Jeffery firearms.