A Study of the Cartridge Marks and Firing Order of Pistol-64

Take samples of live firing whose order has been known,then observe the cartridge marks through a micro- scope to find the marks that are related to the order.With statistics,analysis and inclusion,the marks formed as the bullets enter the bore of pistol,as well as the changes,can be found,so that the order of bullets fired from a pistol-64 can be judged.