Can you help me identify a bullet casing? - Quora
Headstamp - Wikipedia
Identification German WWI Artillery Shell casings brass and steel
6.02 Firearm Evidence
Introduction to Forensic Science and Criminology → Module 4
military - Can anyone tell me anything about the markings on these
Introduction to Forensic Science and Criminology → Module 4
NIBIN: How police use ballistics to tell if your gun has criminal link
Cartridge case terminology and identification – Stephen Taylor
Help identifying a 1945 brass shell casing - General Ammunition
WW1 Imperial German 1918 Dated Brass Shell Case 3 inch Diameter