Artillery Pic

[GerColctor]

Great picture, thanks for sharing.

All firearms training today mandates that the finger be off the actual trigger and lying against the frame until ready to actually fire the weapon. Having the forefinger directly on the trigger can result in an unintended discharge, by "sympathetic mussel" reaction. Many a police officer searching a building, especially in low light, was injured or killed by his partner who was separated and was startled when he suddenly saw "a man" and his immediate reaction was to pull the trigger. In the 1950s nearly happened to my father who was a cop in New Haven, CT, while searching a furniture store with another officer on the midnight shift.
A number of police departments in the age of revolvers had the single action filed down to help eliminate this type of sudden finger reflex when carried hammer back. Having the finger off the trigger gives a little extra time and thought before the weapon is discharged.

In WW II the common military training was finger on the trigger, whenever in a danger zone.