Another beauty is ad copy 'full sidelock' (like there's any other kind). Apparently used to distinguish it from a gun with 'false sideplates'.

The caliber 45 'long' Colt has now been generally accepted in our nomenclature too, even though we have yet to find a 45 'short' Colt or even a 45 Special. This, of course, to avoid confusion with the 45 Automatic, which some insist upon calling 45 ACP for 'automatic Colt pistol' even though it's use is not limited to automatics, Colts, or pistols!

"The price of good shotgunnery is constant practice" - Fred Kimble