The examined bullets were collected from a firing range, where they were removed from sand traps and antifragment pads, and from cases received in a laboratory in routine work. The bottoms of the bullets were examined in three stages: without prior treatment, after treatment in an ultrasonic acetone bath, and the latter treatment with the addition of an evaporation coating with graphite. The bullets' bottoms were examined and analyzed using a Cambridge Scanning Co. Camscan III S scanning electron microscope equipped with a backscatter detector and a Tracor Northern TN 5500 X-ray analyzer. GSR particles were found on the bottoms of all the untreated, discharged bullets examined. These particles matched those of their respective cartridges, both in morphology and composition. Particles were detected even on those bullets that had been severely deformed on impact or subjected to other severe conditions. 1 table, 13 figures, 15 references. (Author abstract modified)