8 x 57 R 360 Load Data & Reloading Guide

Rifle

Also known as: 8x57R, 8×57mm R, 8mm Rimmed Mauser

About 8 x 57 R 360

The 8 x 57 R 360 cartridge is a notable round that traces its origins back to the late 19th century, designed primarily for hunting in Europe. It is a rimmed version of the more widely known 8 x 57 IS cartridge. This design allowed it to be effectively used in break-action rifles and combination guns such as drillings, which were popular in Germany and surrounding regions at the time. Its rimmed feature supports easier extraction in single-shot and break-open firearms, which was crucial in the rugged hunting environments where these firearms were typically used.

Technically, the 8 x 57 R 360 features a bullet diameter of approximately 8.2 mm and a case length of 57 mm, similar to its rimless counterpart but with key differences in the rim structure and possibly the shoulder profile. The cartridge is renowned for its efficient ballistics in medium-sized game hunting, delivering a good balance of power and manageable recoil. Typical bullet weights for this caliber range from 180 to 200 grains, providing sufficient energy and penetration for humane and effective hunting.

Given its moderate pressure and performance characteristics, the 8 x 57 R 360 can be an excellent choice for handloading enthusiasts. Reloaders benefit from its relatively forgiving nature, which simplifies adjustments in powder loads compared to other higher-pressure cartridges. Moreover, its traditional use in hunting means that a variety of bullet styles are available, allowing reloaders to tailor their loads for specific game or shooting conditions. These advantages make the 8 x 57 R 360 an appealing caliber for those interested in both historical firearms and practical hunting applications.

Technical Drawing

8 x 57 R 360 cartridge dimensions, C.I.P.L1 = 46 mm, L2 = 48 mm, L3 = 57 mm, L6 = 77 mmL1 = 46.00 mmL2 = 48.00 mmL3 = 57.00 mmL6 = 77.00 mm25.9°

Based on C.I.P., the max. allowed case length is 2.244 in / 57.00 mm, the max. cartridge length is 3.031 in / 77.00 mm, and the max. allowed pressure is 35,534 PSI / 2,450 bar.

Technical Specifications

Maximum Pressure:35534 PSI / 2450 bar
Case Volume:51.5 Grains of Water
Primer Size:Large Rifle (LR)
Safety Standard:C.I.P. (Datasheet)
Bore Area:50.3 mm²
Barrel Diameter:0.318" / 8.1 mm
L1:1.811" / 46.00 mm
L2:1.890" / 48.00 mm
L3:2.244" / 57.00 mm
L6:3.031" / 77.00 mm

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Brass Case Capacities

The following table shows the case capacity (Grains of Water) for brass in cartridge 8 x 57 R 360 where we have data (number of datapoints in brackets).

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Standard Load Data — 8 x 57 R 360

Select your desired cartridge and bullet weight below to access the corresponding load table. From there, you can choose any listed load recipe and transfer it directly into the ballistics calculator for further refinement, optimization, and precision tuning.

All
122 gr
125 gr
140 gr
148 gr
150 gr
165 gr
170 gr
175 gr
180 gr
195 gr
196 gr
200 gr

Frequently Asked Questions

The maximum pressure for 8 x 57 R 360 is 35,534 psi | 2,450 bar.

8 x 57 R 360 typically uses a Large Rifle (LR) primer.

The case capacity of 8 x 57 R 360 is approximately 51.5 grains of water (H₂O).