3 patients attempted suicide by a powder-activated cattle skull impacting tool (Slaughterer’s gun). While captive bolt pre-slaughter stunning in pigs & ruminants is safe, 2 of the patients remained conscious after the shot & survived. Despite much lower impact velocity (less than 50 m/sec) these self-inflicted brain lesions are as serious as penetrating gunshot wounds, mainly because of impaction of bone fragments and the dynamic energy possessed by the bolt. 14 Ref.