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8 x 57 R 360
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Caliber Specifications:
Caliber: | 8 x 57 R 360 |
Standard / Datasheet: | C.I.P. |
Bullet Diameter: | 0.318" | 8.08mm |
Primer Size: | Large Rifle (LR) |
Max. Case Length: | 2.230" | 56.64mm |
Max. Cartridge Length / OAL: | 3.030" | 76.96mm |
Max. Standardized Pressure: | 35534 psi | 2450 bar |
Case Capacity: | 51.5 Grains of Water | 3.34 cm3 |
CID: | CID_1176 |
Last updated: | 3/12/2025 |
- The 8x57 R 360 is a unique and uncommon cartridge that has its roots in the English Kynoch 2 1/4" 360 Nitro-Express. It is a less powerful 8mm cartridge, with a shot of 12.5 g having a muzzle velocity of about 1,400 m/s. The "360" in the name refers to the English charge 360 Black Powder Express from which this charge is based on.This cartridge is not as widely available as other 8mm cartridges like the 8x57 JR or JRS, making it difficult to find for those looking to add it to their collection. However, there are some resources online such as Roberson Cartridge Company where you can purchase it and forums like AfricaHunting.com and The High Road where you can discuss it with fellow collectors. Additionally, reloading data can be found at LoadData.com and AccurateReloading.com forums for those who wish to reload their own ammunition.
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Most popular powders from our community members for caliber 8 x 57 R 360:
Weight vs. Velocity - Suitable Bullets for this Caliber
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Barrel Length Variation vs. Velocity - by Bullet Weight
8 x 57 R 360 load data available with the following bullets:
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