Quote Originally Posted by 45flint View Post
In reading about early BSA air rifles it looks to me the "Light", "No. 1", and .177 are all names for the same rifle?
No. "Light" is the pattern of the rifle. In England we used to use the word "pattern" instead of the word "model". No1 and .177 both refer to the calibre. No1 bore was .177" calibre, No2 was .22 and (in aiguns) No3 was .25.
In shotguns, No3 bore was another name for the 9mm Flobert shot cartridge.