vbl. sb. [f. SNAP-.] The practice of firing or taking snap-shots.
1872. Gentl. Mag., Dec., 664. Snap shooting, as it is termed, is very effective sometimes by experienced gunners.
1883. H. K. B. Davis, in Century Mag., Aug., 493/2. Snap-shooting is generally understood to consist in pulling the gun to the shoulder and firing the instant it is in position.