8mm Pieper

Cartridge Data Published On: December 20, 2014 at 11:36 pm by Bullet-Blog and last updated on February 12, 2015 at 11:24 am


Remington UMC Pieper, 8x37R Pieper


The 8mm Pieper (AKA: Remington UMC Pieper, 8x37R Pieper) is a (UNKNOWN) cartridge with a Bullet Diameter of 0.286 in” (7.26mm) that is primarily used in Pistols. The 8mm Pieper originated in Belgium in Approximately the 1890s. The 8mm Pieper also has a case length of 1.467 in” (37.26mm) and an overall length of 1.467 in” (37.26mm).


The 8mm Pieper, also known as the Remington UMC Pieper, is an unusual rimmed cartridge developed by Henri Pieper of Belgium for use in the M1893 Revolver and M1893 Revolving Carbine Rifle. The cartridge closely resembles the 7.62mm Nagant pistol cartridge, with the projectile being seated below the mouth of the case, with a crimp just above the bullet. The idea was that upon firing the weapon, the projectile would force past the neck crimp and create a gas seal with the forcing cone inside the firearm, this adding to the velocity of the projectile by forcing gases and pressure through the barrel behind the projectile.

The 8mm Pieper pistol cartridge only saw a short life span of just a few years. The Remington United Metallic Cartridge company produced ammunition for this round as early as 1901 up until approximately 1921, although it is possible that ammunition was manufactured or reloaded after this time period. Because of the extreme similarity in design, many have assumed that the 8mm Pieper cartridge is in fact the same as the 7.62mm Nagant cartridge, mostly because of the lack of data available and the obscurity of the cartridge, although there is no real information to support this claim.

Henri Pieper died in 1898 at the age of 57 and much of his work dies with him. In the early 20th century, the second son of Henri Pieper, Nicolas Pieper, continued his fathers legacy in the arms trade until around 1923. Nicolas Pieper’s had several creations including the Pieper M1907-M1909 Pistols, as well as the 6.25mm Legia, Model A 7.65mm and .25 Piper Steyr, chambered in the 7.65mm Browning cartridge and manufactured by Steyr. After 1933 much of the Pieper legacy disappears, likely due to the premature death of Nicolas Pieper.

Cartridge Details

  • Year:
  • Origin:
  • Cartridge Type:
  • Application:
  • Bullet Diameter:
  • Shoulder Diameter:
  • Case Length:
  • Overall Length:
  • Approximately the 1890s
  • Belgium
  • Rimmed, Bottleneck
  • Pistols
  • 0.286 in” (7.26mm)
  • N/A
  • 1.467 in” (37.26mm)
  • 1.467 in” (37.26mm)

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