The raw hand and forearm strength capacity that provides headroom for the grip connection required in practical shooting. Grip strength is not the primary skill -- motor control and deployment are -- but sufficient hand strength ensures that maintaining a firm connection is an easy percentage of maximum capacity rather than a sustained max-effort exertion. This skill sits beneath grip as a supporting attribute: it makes the connection philosophy easier to execute but does not replace it. A strong grip poorly deployed is worse than a moderate grip correctly deployed. The minimum threshold for competitive practical shooting is approximately 100 lbs of grip force per hand, measured in shooting-specific geometry (not a standard straight-wrist dynamometer squeeze).
Grip strength for shooting is measured differently than general grip strength. The key distinction is geometry: you must measure with the same fingers and wrist position used when shooting.
For the dominant hand: only the three lower fingers (middle, ring, pinky) grip the dynamometer, positioned as if gripping a pistol -- the index finger is free for trigger work. The wrist is in a neutral-to-slightly-forward position.
For the support hand: all four fingers grip the dynamometer, but the wrist is canted inward (ulnar deviation) to match the support hand position on a pistol grip. This is the critical distinction -- a straight-wrist dynamometer squeeze does not replicate the shooting grip angle, and many shooters who exceed the 100 lb threshold in a standard grip fall short in shooting-specific geometry.
Strength training must balance the flexor muscles (grippers/closing) with the extensor muscles (back of the hand and forearm). Training only grippers without extensor work leads to tendonitis -- a common injury in competitive shooters who overtrain grip. A balanced program exercises both closing and opening movements.
What a coach would see in a shooter with adequate grip strength: the hands are firmly connected to the gun but there is no visible strain, no white knuckles, no forearm tremor. The grip looks effortless because it IS effortless -- the shooter is operating well below their maximum. What a shooter feels: the grip feels natural, like holding a familiar tool. No sensation of effort. The grip pressure can be maintained for the duration of an entire match without fatigue.
General strength development (deadlifts, farmer's carries, pull-ups, dead hangs) builds the forearm and hand strength needed for shooting as a byproduct. These exercises are safer and more effective than specialized grippers because they develop the entire kinetic chain and reduce injury risk.
The shooting community has a massive gripper obsession -- Captains of Crush, specialized grip trainers, forearm isolation work. But the actual bottleneck for the vast majority of shooters is not grip STRENGTH but grip DEPLOYMENT: asymmetric pressure, correct hand placement, support hand indexing off the trigger guard. Most adults, including small-handed and physically weak shooters, already have sufficient raw strength. The specialized gripper industry profits from giving shooters a concrete, measurable activity (squeeze harder) that avoids the actual problem (deploy correctly).