Brand name or model of the gun? You described only the caliber. Some revolvers open by a latch on the left side and the cylinder comes out to the left. Some in that cartridge are what you call a "top break" revolver and have a latch on the top of the gun. Doing a Google search or two would help, or at least post what brand or model the gun is.
No difference. CTG is the abbreviation for cartridge. A revolver marked 38 Special CTG, or .38 S&W Special CTG is simply indicating that it is chambered for a .38 Special cartridge. This IS different from .38 S&W, and older, shorter, fatter, less powerful cartridge.
38 special is a full length 38 cartridge whereas a 38 S&W cartridge is also a 38 caliber but it has a shorter case.
38 S&W ammo. which is a shorter version of the 38 special cartridge.
You need to call S&W
@ 1976
Yes
42-45
10 to 75 cents a round.
@ 1970
K, l, n
much like a 38 special cartridge except a little shorter..
100-340 USD