Black powder military cartridge for the Dutch Beaumont and Beaumont-Vitali repeating rifles; one of the last major military services using a large-bore black powder round.
Type: Rifle
Introduced: 1871, Netherlands
Parent case: Proprietary
Standardization: Military
Bullet diameter: 0.432" (10.97 mm)
Rim type: Rimmed
Primer: Berdan Large Rifle
Production status: Discontinued
Also known as: 11x52mmR Beaumont · 11mm Dutch Beaumont · Beaumont-Vitali cartridge · 11x52R
History: Adopted in 1871 for the Dutch Beaumont single-shot rifle, and later used in the Beaumont-Vitali 8-round tubular magazine conversion. The Netherlands was one of the last major powers to field large-bore black powder military rifles before the transition to small-bore smokeless cartridges.