The overall results indicate that, at a fixed velocity, abrasion ring size increases in proportion to projectile diameter. For fixed-diameter projectiles, abrasion width increased with intermediate velocities and decreased with very slow and very fast velocities. The authors maintain that abrasion width is directly related to the ratio of projectile velocity and the maximum deformation velocity of the target skin; the largest abrasion width occurs with a ratio of one. The expected results of decreasing abrasion width were obtained by using a projectile velocity at an initial warm temperature and decreasing the target deformation velocity by cooling. 6 figures and 2 references (Author abstract modified)