Shooting the pistol with only the dominant hand. Required in USPSA when a stage designates strong-hand-only shooting, and a critical skill for handling malfunctions or injury scenarios. The challenge is maintaining grip pressure and trigger control with only one hand managing recoil, grip, and trigger simultaneously. Also valuable as a training tool — one-handed shooting exposes problems in the dominant hand that are masked by the support hand in two-handed shooting.
Strong-hand-only is a direct progression from grip and trigger-control — it tests whether those skills are solid enough to function without support hand assistance. It is a prerequisite for weak-hand-only since the same principles apply but mirrored. Connected to gun-tuning because the gun must cycle reliably one-handed (spring tuning is a prerequisite for consistent one-handed shooting). Used as a diagnostic tool for recoil-management — problems in two-handed recoil management are amplified and exposed in one-handed shooting.
The common instinct in one-handed shooting is to cant the gun inward toward the dominant eye. This changes the recoil vector: instead of going straight up, the muzzle arcs laterally, making transitions to one side easy and the other difficult. Pointing the elbow straight down keeps the gun perfectly vertical, making recoil go straight up and return straight down. Left and right transitions become equally easy -- "transition agnostic."