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Cartridge of the Week

Talyn

SAINT
Founding Member
The 7.65x53mm Mauser / 7.65x53mm Argentine

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The 7.65×53mm Mauser (designated as the 7.65 × 53 Arg. by the C.I.P.) is a first-generation smokeless powder rimless bottlenecked rifle cartridge developed for use in the Mauser Model 1889 rifle by Paul Mauser of the Mauser company. It is also known as 7.65×53mm Argentine, 7.65×53mm Argentine rimless, 7.65mm Argentine, 7.65×53mm Belgian Mauser or 7.65mm Belgian (in the United States) and 7.65×53mm Mauser (in Belgium). The 7.65×53mmR is a rimmed variant of the 7.65×53mm Mauser cartridge.

Ballistically it is comparable to the also-rimmed .303 British cartridge. The 7.65×53mm Mauser was the result of considerable experimentation by Paul Mauser to optimize the bullet diameter for use with the new smokeless propellant introduced as Poudre B in the 1886 pattern 8mm Lebel that started a military rifle ammunition revolution. At the time of its development it was a high-performance smokeless-powder cartridge.

This cartridge was loaded commercially by many manufacturers in the United States until about 1936. Hornady is the only major U.S. ammunition manufacturer to still produce this cartridge. Sporting ammunition in this caliber is still loaded in Europe. Norma, Prvi Partizan, and Fabricaciones Militares (FM) currently produce 7.65×53mm ammunition. Boxer-primed cases are easily formed from .30-06 brass; resize and trim. For reloading the cartridge, use .303" British load data.

The original 1889 pattern military ball ammunition was introduced in the Mauser Model 1889 and loaded with a 210.7gr round-nosed bullet fired at a muzzle velocity of 2,133ft/s with 2,127ft⋅lbf muzzle energy. Following the lead of French and German army commands in developing the spitzer - a pointed-tip - bullet shape, later military ball ammunition was loaded with a 154.3gr spitzer bullet fired at a muzzle velocity of 2,723 ft/s with 2,541 ft⋅lbf muzzle energy from a 23.2 in long barrel became available. It had a maximum range of 4,046 yd. Reverse engineering the trajectory from the previous sentence indicates a ballistic coefficient (G1 BC) of approximately 0.34. After that military ball ammunition loaded with an 173.6gr spitzer bullet fired at a muzzle velocity of 2,379ft/s with 2,181ft⋅lbf muzzle energy from a 23.2 in long barrel became available. Besides a pointed nose this projectile also had a boat tail to further reduce drag. It had a maximum range of 5,468yd. Reverse engineering the trajectory from the previous sentence indicates a ballistic coefficient (G1 BC) of approximately 0.55.
 
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