I'm in way over my head here, not being well-versed in any of the muskets mentioned. However, there's a philosphical drift you should avoid in the phrase: "not common but I would think it was done." Some items of militaria vanish after 150 years: clothing, accoutrements, newspapers and written ephemera. Hardware like guns take a lot longer. Can you pinpoint a surviving example of the musket repair you outline? Or perhaps orders for the same (at least then you can argue that it was planned, but perhaps not executed)? If not then this repair, although effective, is no more historical than wrapping the barrel in leather strips and carpet tacks like an Indian gun. Not to sound mean or anything, but before I went to a lot of trouble on a high dollar item like a unique musket, I'd want very good research to substantiate it.
Pine River Boys, Co I, 7th Wisconsin
"We're... Christians, what read the Bible and foller what it says about lovin' your enemies and carin' for them what despitefully use you -- that is, after you've downed 'em good and hard."
-Si Klegg and His Pard Shorty