Maximum Trigger Force
Published: 20 June 2025| Version 1 | DOI: 10.17632/w6952gxy92.1
Contributors:
Theodore Milner, , , Description
Maximum index finger force in a simulated trigger pull of a handgun measured for male and female subjects. The effect of wrist angle was investigated by having subjects pull the trigger for 7 wrist angles varying between 60 deg extension and 60 deg flexion.
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Steps to reproduce
Subjects sat with their forearm resting on a moveable rest and exerted maximum pull force with their index finger while gripping a dummy handgun. The handgun trigger was simulated using a shackle attached to force sensor. The wrist angle was varied from 60 deg extension to 60 deg flexion in 20 deg increments. Subjects used their preferred finger grip, i.e. hook or pad grip. Maximum hand grip force was also measured using a dynamometer.
Categories
Forensic Analysis, Wrist, Index Finger, Physics of Firearm