If you want history and production details on the Remington Lees, there's one "go to" book, written by one of our members:
THE REMINGTON-LEE RIFLE by Eugene Myszkowski
This thread won't attempt to regurgitate too much of his work. It's well worth getting a copy!
If anyone has an 1899 with a good bore and won't mind sharing a range report, it would be most welcome! Mine has the typical rotten bore which is due to a primary diet of blank cartridges. A friend has a Cuban carbine that looks better, rifling-wise, except for the last inch or so, which is completely "wallered out". So shooting results are apt to be dismal at best, and "ill advised" for the most part. ALMOST bought one to rebarrel, but it just wouldn't be the same, so opportunity lost...