Turntable calibration for automatic 3D-reconstruction

A firearm cartridge is provided with a thin-wall tubular casing which carries a percussion element at its rear end and which exhibits a radially inwardly bent flange on its front end. A projectile is supported in the forward portion of the case by means of a bushing having an inwardly and forwardly extending taper that terminates in engagement with the flange of the casing. The inner periphery of the bushing exhibits an outwardly directed projection intermediate its ends, such projection being received in a mating annular recess on the outer periphery of the projectile.