Like a good sharpshooter's hand

STEADY

Think of how a marksman holds their aim without the slightest tremor.

A good sharpshooter needs a "steady" hand to aim accurately, so the clue is hinting at that quality. The word "like" signals it’s looking for a synonym or descriptive term, not a literal object. "Steady" fits perfectly as it describes both a firm grip and reliability in shooting.