.30-03

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.30-03
30-03G.jpg
general information
caliber 7.62 mm
Sleeve shape rimless bottle neck sleeve
Dimensions
Sleeve shoulder ⌀ 11.2 mm
Sleeve neck ⌀ 8.6 mm
Floor ⌀ 7.8 mm
Cartridge bottom ⌀ 11.9 mm
Sleeve length 65 mm
Cartridge length 85 mm
Weights
Bullet weight 14 g
Powder weight 2.9 g
Technical specifications
Speed ​​v 0 700 m / s
Bullet energy E 0 3505 J
Lists on the subject

The .30-03 cartridge (decimal caliber 7.62 × 65 mm ) was introduced in 1903 as ammunition for Springfield M1903 rifles in the US Army . It was produced from September 1903 to October 1906.

development

The Krag-Jørgensen rifles had a cylinder lock with only one locking lug, so that the use of stronger ammunition endangered safety. To keep up with developments in Europe, the Springfield M1903 was designed, which had a Mauser closure. The Mauser closure System 98 was and is considered to be the most resistant closure worldwide.

A stronger cartridge could now be introduced. At the same time, a modern, rimless sleeve shape was used. An intermediate step in this development was the rimless cartridge called .30-01, which was also known as the English thick rim because of its thick pull-out ring . On the .30-03 the thickness of the pull-out ring was reduced to what is still common today. It contains a load of 45 grain (2.9 g) smokeless powder, which is 5 gr (0.3 g) more than the .30-40 Krag, which is why the new cartridge was initially referred to as the .30-45. The naming system was later changed and the second number has since been used to indicate the year of introduction. The round head bullet of the .30-03 was taken over from the .30-40 Krag. It was a full jacketed bullet with a jacket made from a copper-nickel alloy.

The .30-03 had to struggle with various problems that also occurred in other countries, such as increased barrel wear and poor ballistics. The latter resulted from the relatively high bullet weight and its poor aerodynamics. Similar to the German 7.92 × 57 mm , these problems were eliminated by the introduction of a pointed bullet. This new cartridge, with a pointed bullet and a slightly shorter case, was the .30-06 Springfield introduced in 1906 .

Individual evidence

  1. ↑ The cartridge collector. Development of the 30-06 cartridge ..... www.oldammo.com, accessed December 9, 2017 .
  2. ↑ Chris Punnett: An Introduction To Collecting .30-06 Cartridges. cartridgecollectors.org, accessed December 9, 2017 .

literature

  • Frank C. Barnes: Cartridges of the World: A Complete and Illustrated Reference for Over 1500 Cartridges . Ed .: W. Todd Woodard. 15th edition. Gun Digest Books, 2016, ISBN 978-1-4402-4648-7 , pp. 180 .
  • Philip Peterson: Standard Catalog of Military Firearms: The Collectors Price & Reference Guide . In: Standard Catalog Series . 8th edition. F + W Media, 2017, ISBN 978-1-4402-4676-0 , pp. 485 ( limited preview in Google Book search).

Web links