Webley made a large revolver in this chambering around 1868. I seem to remember it was a 4 shot cylinder because of the size of the cartrige. I've seen a picture of one, but can't seem to find it right now. If I do, I will post it.
I also think there were some "Howdah" pistols (Large single-shot or double barrel) in this chambering.
I believe Tranter made a five shot .577-it had a seperate backing plate that revolved with the cylinder (similar to cartridge conversion cylinders for cap and ball revolvers). Can't remember which book/magazine/annual I saw it in, but I seem to remember the article's author actually made some .577 rounds and fired the beast! Neat looking gun-the cylinder looked like tubes welded together.
Not sure of the .577 Boxer round, but the old British Martini-Enfields fired the .577 cartridge. The .577 was later necked down to .45 caliber to become the .577/.450, the British practice of retaining the original cartridge designation to indicate it was the .577 necked down to .45 caliber. Later the round was shortened to revolver length to become the .577/.450 Revolver, which, if I remember correctly, had a bore diameter of about .600" and was used in a few British and Belgian revolvers of the period.
"Cartridges of the World" complete? Don't think so. I find H.P. White's "Cartridge Identification Guide" series the most nearly complete work, as well as "U.S. Cartridges and their Handguns" to be an excellent work. One book, by Erlanger and Brandt, excapes me now, but printed in Germany but bilingual, is one of the best sources of information for metric ammunition. And "The Cartridge guide" while without illustrations, is most helpful as to headstamp information.