You should. If the markings aren't visible, it's typically a sign of a worn or weak extractor.
The first production semi auto pistol was the Mauser c/96 "broomhandle" pistol.
In order to tell how old your Colt 25 semi auto pistol is, you will need to offer the serial number. This number gives you an idea of when the pistol was manufactured.
Semi-auto requires the hammer to be cocked for the first shot.
15m
@1893
15m
It's semi auto not full auto.
They refer to this handgun as the browning model BDA (browning double action auto) pistol.
Revolver or semi-auto?
225
only a pistol is an semi-automatic. revolvers are not semi auto. A "pistol" is a generic term to refer to ANY handgun, revolver or Semi-automatic. Wrong! Only some one completely unfamiliar with hand guns nomenclature would call a revolver a pistol. A revolver is commonly referred to as: "revolver, wheel gun or shooter (short for 6 shooter)." A semi automatic is commonly referred to as: "semi auto or pistol."