Distribution of GSR particles in the surroundings of shooting pistol

Distribution of gunshot residues – The influence of weapon type

“…The general assumption that a person tested positive for GSR has fired a shot, is rather questionable. Several studies indicate that an abundance of GSR particles is emitted for several meters, primarily in the direction of the shot and -to a lesser extent -also in the direction of the spent cartridge ejection [19,20,22]. The results of this study and those of previous high-speed investigations [7,24,25] indicate that considerable differences in GSR particle dispersion exist between various firearms.…”

“…Previous studies have already investigated the influence of distance from the shooter [19][20][21][22], time after shooting [23] and weapon type (e.g. [7,24,25]) on the distribution of GSR particles.…”

Time periods of GSR particles deposition after discharge-final results

“…This arrangement was selected on the basis of results obtained in past experiments, aimed at the determination of GSR particles distribution around the shooter [2]. Within this area most GSR particles were found.…”

Distribution and properties of gunshot residue originating from a Luger 9mm ammunition in the vicinity of the shooting gun

“…Some ideas on the range of GSR and time sedimentation were gathered performing single experiments in controlled conditions, including preparation and distribution of horizontal accumulating targets around the shooter at various heights [14][15][16]. In shooting cases, however, often a person that becomes a victim is initially in the upright position.…”