Dating cartridge headstamps
Headstamps consist of one or more parts or information elements. Cartridges intended for sporting or civilian use usually have two elements; one identifies the specific chambering, the other identifies the manufacturer. The box contains tracer rounds (bullet to the right). [Note: All ammunition is offered as collector's items only.Some used three elements spaced equidistant from each other while others adopted a four-element system located at 12, 3, 6 and 9 o'clock. Also the location of the factory code was changed, in some instances, to 6 o'clock or other locations. This usually indicates an older cartridge, since most countries discontinued segment lines shortly after World War I. military headstamp prior to World War II had two elements, with the factory code at 12 o'clock and the date at 6 o'clock. The location of the elements is most conveniently indicated by its clock-face orientation, with 12 o'clock at the top, 3 o'clock at the right, 6 o'clock at the bottom and 9 o'clock at the left. Rapid expansion of ammunition manufacturing facilities as the result of the war introduced many new designs without any effort at standardization.
Information that can be obtained from the headstamp is extremely varied and depends on the intended purpose or use of the cartridge and who manufactured it.
Currently owned and operated by Pachmayr, a division of Lyman Products, 475 Smith Street, Middletown, CT 06457A & W Allendorff, Sprengstoff-und Patronenfabrik, Schönebeck a.
Elbe, Germany (After Aug 1, 1913: Öberschlesische Aktiengesellschaft für Armee und Marine, Abteilung, Schönebeck a.
Also a number of private firms manufactured military ammunition during World War I and II.
Winchester-Western W-W, super speed There were about 15 other companies that manufactured ammunition at various times, particularly during the 1860-1900 period.