PECULIARITIES OF IDENTIFICATION STUDIES INTO WHETHER A FIRED 7.62x39 CALIBER BULLET AND CASE BELONG TO THE SAME CARTIDGE

Abstract

Based on experimental research, the article determines the peculiarities of the impact trace formation mechanism on the external surfaces of the bullet and on the internal surfaces of the case mouths in 7.62*39 caliber intermediate cartridges. The article determines the influence of the case mouth crimp on the properties of the abovementioned traces, it also provides peculiarities of undertaking identification studies to establish whether the bullet and case belong to the same cartridge of the given caliber. It suggests using a special shell to reproduce experimental interaction traces and the way of its application, it allowed to obtain a solid identifiable microrelief on the surfaces of experimental samples. The article suggests the most suitable material for this type of a shell capable of reproducing traces. This kind of studies do not require special equipment and involvement of highly qualified specialists, experiments are prepared and conducted only with the use of available resources and common equipment. The suggested method can be applied for relevant traceological studies of material objects with curved contact surfaces that interacted with each other.