types of the double tap
THE DOUBLE TAP
Notes taken from the article "Firing Modes with the Combat Handgun"
By Gregory Boyce Morrison S.W.A.T. Magazine / October 1989 -- Page 46
The reason we stress two hits are simple: First, even the most powerful handguns are pretty mild in terms of fight stopping ability, so two hits are better than one. Second, such a practice increases the odds of a solid hit on a difficult target. Third, it provides a greater likelihood of damaging something critical. Fourth, even under the best of circumstances there is always the possibility of a miss.
TYPES OF DOUBLE TAP
THE CONTROLLED PAIR -- They are a pair of shots involving deliberate use of the sights, when there is sufficient time for minor sight alignment adjustments between shots. More simply, a controlled pair consists of two fast single shots separated by a span of time no longer than necessary for the proper manipulation of the trigger.
THE ACCELERATED PAIR (aka THE HAMMER) -- An accelerated cadence is possible when dealing with extremely close range targets from perhaps 15 feet (5 yards) in to arm's length. At this distance most people can fire the weapon in a manner called "Hammering". The first shot is fired as in the controlled pair, but the difference lies in how the second round is discharged.
The hammer is accomplished by timing the second trigger press with the return of the bore line to the same axis as during the first shot. The sights are not acquired for the second shot, as muscle energy is depended upon to return the weapon to proper alignment. The muzzle-dampening benefits of the Weaver Stance considerably enhance the technique. The hammer is sufficiently different from the controlled pair, so that it requires additional attention. It is a good technique, but one probably won't perfect it in an afternoon.
THE DEDICATED PAIR -- This mode of fire is the end result of the natural progression of speed with the controlled pair. As one reduces the shot-to-shot time interval with the controlled pair, there comes a point where sight adjustments for the second shot are precluded. The sights are seen on the second shot, and the shooter can call the shot, but there is insufficient time to change anything. Its use results in a cadenced firing speed, for whether at 5 or 15 yards, it still takes the same amount of time for the weapon to return to the line of sight established on the first shot of the pair.
Once the trigger finger is educated, it works quite well. From some observations of the firing speed, we would imagine that many people who feel that they are "hammering" are in fact, firing dedicated pairs.
One finds that with practice the sights naturally settle back to the original line of sight following the shot. If this is deeply programmed through the practice of proper technique, one of the results at the accelerated end of the continuum is the "dedicated pair". It is slightly slower than the "hammer" but it can be used at considerably greater distance. The only limiting factor is one's personal degree of consistency in stance, grip, muzzle control and trigger control.
(Morrison taught at Gunsite when Col Jeff Cooper still operated it, and the terminology above was actually Cooper's)