Hello Ted Schefelbein,
Thanks for your reply.
I think it is "you" that's not paying attention. Let me repeat, I didn't come to this site looking for "your" confirmation of the definition of a Cape Gun. The gun "is-what-it-is". I enjoy adding a unique firearm to my collection. I find it interesting. Others may - or may not.
I find it hard to believe your claim that a Company like Manufrance, who made hundreds of thousands of guns, would have inaccurate and incomplete markings. You've now mentioned twice, what marks this gun doesn't have. How about a detailed translation of those 20-odd marks it "does" have. I might find "that" useful. I've taken the time to take a lot of pictures to show the marks on this gun. Lets see some of your pictures of the marks it doesn't have. I might find "that" useful.
I'm very impressed with your vast experience with "one" slug gun from France. WOW ! "minute of baseball at 70 yards" - compared to "minute of watermelon at 25 yards". Now there's a snappy "one-gun-guru" technical comparison. Lucky I didn't start my testing at 50 yards. It might have shown "minute of bushel basket" in those first TEST targets.
As for French guns, I have a few French Double rifles in my collection. I even had a French Darne 20ga once. I found the "mouse-trap" feature very unconventional and impractical for actual bird hunting. I sent it down the road, quickly, and never asked about another.
For all the "other" Forum members, I'm hoping to get to the range to do some additional load development later in the week. I'll post the resulting targets.