There are proper gunsmithing names for what you detect but to the rest of us, what you feel in those last few degrees of barrel movement is the cocking mechanism moving the hammers/tumblers beyond the point at which the sears engage their bents. When you let off the pressure on the barrels/cocking mechanism, the main springs return the cocking mechanism/barrels to the cocked position.
With the greatest respect to 2-piper, the gun should cock BEFORE the spent shells can be removed/ejected or in theory one could reload and slam shut a gun with the hammers in the fired position, ie strikers protruding from the breech face, with frightening consequences.
A correctly regulated gun will only have a little barrel movement after full cock is achieved and a gun that does not let you load or unload without having to push it beyond full cock has had its sears so reduced in length (by bad manufacture or ham-fisted/repeated trigger regulation) that the correct regulation has been lost and the sears need replacement or extending by a knowledgeable gunsmith with a good TIG welder.
Last edited by Toby Barclay; 11/16/13 03:41 PM.
