Ejected casings from handguns fired at a shooting range were observed to leave impact marks on nearby wooden support posts. This led to the idea that such marks could be present at shooting scenes and, if found, could provide additional information to aid in scene reconstructions. The identification and careful interpretation of such marks from actual shooting scenes could assist in reconstructing shooting incidents.
Impact Marks from Ejected Cartridge Casings
Poorman, J. K.; Spring, T. F. Impact Marks from Ejected Cartridge Casings. J. For. Ident. 2004, 54 (5), 525-529.