Fig. 16From: Divergent gunshot residues and characterization of the memory effect in a .22 caliber revolver and pistolThe GSR reservoir hypothesis for the creation of pistol breech GSR; the behavior of GSR elements in this proposed reservoir is based on observations of the pistol experiment and may differ in other firearms. In this case, PbSb accumulates on the interior surfaces before being released, likely due to reduction of PbBa concentration within the pistolBack to article page