Evaluation of density pattern of GSR on target determines the possible range of firing. For experimentations at various ranges, besides gun-ammunition combination , the choice of appropriate test targets must be assessed. Adsorption behaviour of GSR on multilayer clothing sets, usually worn in winter/summer, has been found helpful in arriving at significant conclusion. A study of bulk quantitative elemental analysis of 250 gunshot residue samples by EDXRF on clothing apparel sets has revealed that upper most layer does not always carry the maximum deposits and the lowermost the minimum deposits. The metal deposits on various clothing layers may or may not have decreasing gradient. Besides other significant conclusions, the choice of test targets in case of winter clothing has been found to be none other than similar type stitched coat piece.In such cases, it is not necessary that test targets should have all other layers. But in case of summer clothing sets having shirt and vest it is essential that both layers must be used.
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homemade/improvised firearms and modified ballistic table
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