Features of Close-Range Gunshot Residues Formed When Firing a TG-2 Hunting Carbine (“Paradox”) with Various Samples of cal. 366 TKM Cartridges

The article is based on the analysis of the design and ballistic characteristics of 366 TKM cal. cartridges of various samples (with “FMJ-2” shell bullet, “KION 13” semi-shell bullet, “ECO” all-metal bullet made of zinc alloy, “DERI” cast lead bullet in a polymer antifriction shell) and the results of experimental firing thereof from a hunting cal. 366 TKM carbine TG-2 (“Paradox”) revealed the features of a close shot gunshot residues (GSR) left on targets made of white cotton calico.

There are noted the features of the cal. 366 TKM cartridges and their processing stages. It is demonstrated that the complex of GSR left on the shot barriers characterizes the cases of shooting from a hunting cal. 366 TKM carbine TG-2 (“Paradox”) with cartridges cal. 366 and bullets “FMJ-2”, “KION 13”, “ECO”, “DERI” which is inherent in each of these cartridge samples. Provided that the cal. 366 TKM cartridges with bullets “FMJ-2”, “KION 13”, “ECO” and “DERI” belong to the same model range of cartridges, the GSR formed by them when firing from a TG-2 (“Paradox”) cal. 366 TKM hunting carbine are different from each other. This applies both to the features of GSR external differences and their qualitative composition differentiations. The qualitative GSR composition is characterized by particular specificity when firing cal. 366 TKM cartridges with an all-metal bullet made of zinc alloy “ECO” and a cast lead bullet in a polymer antifriction shell “DERI”. In the first case these features are determined by zinc alloy particles deposition in the GSR and in the second case by the polymer shell fragments (polyester resins based on terephthalic acid) in their native form or modified by mechanical or thermal shot effect.

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