Rimmed military cartridge developed for the Thai (Siamese) Type 45 Mauser-pattern rifles; visually similar to the 8x50R Mannlicher but dimensionally distinct and not interchangeable.
Type: Rifle
Introduced: 1902, Thailand
Parent case: 8x50mmR Mannlicher (modified)
Standardization: Military
Bullet diameter: 0.323" (8.2 mm)
Rim type: Rimmed
Primer: Berdan Large Rifle
Production status: Discontinued
Also known as: 8mm Siamese Mauser · 8x52R Siamese · Type 45 Siamese · 8x52 Siamese
History: Developed around 1902 for the Siamese (Thai) Type 45 Mauser rifle, the 8x52mmR Siamese is unique to Thailand and not interchangeable with other 8mm rimmed cartridges despite superficial similarities. Surplus rifles and small lots of ammunition still surface in collections.