8mm Mauser

Rifle Also: 7.92x57mm Mauser, 8x57 IS, 8x57 JS

Ballistics (Typical Factory Load)

2,700
Muzzle Velocity
fps
2,902
Muzzle Energy
ft-lbs
181
Typical Bullet
grains
8.22
Bullet Diameter
mm
35,000
Max Pressure
PSI
57.0
Case Length
mm

Handloading Data

Reference load data for experienced reloaders. Always start at the start charge and work up. Consult official manuals before loading.

Bullet Powder Start Max Velocity COAL Source
150 gr (9.7 g) SPBT Hodgdon H4895 44.0 gr
2.85 g
48.5 gr
3.14 g
2,800 fps 3.250 Hodgdon
170 gr (11.0 g) SPBT Hodgdon Varget 44.0 gr
2.85 g
48.0 gr
3.11 g
2,650 fps 3.250 Hodgdon
170 gr (11.0 g) SPBT IMR 4064 43.0 gr
2.79 g
47.0 gr
3.05 g
2,620 fps 3.250 IMR
196 gr (12.7 g) SPBT Hodgdon H4350 48.0 gr
3.11 g
52.5 gr
3.4 g
2,500 fps 3.250 Hodgdon
196 gr (12.7 g) SPBT Alliant Reloder 19 48.0 gr
3.11 g
52.0 gr
3.37 g
2,520 fps 3.250 Alliant
220 gr (14.3 g) SPBT Hodgdon H4831 48.0 gr
3.11 g
52.0 gr
3.37 g
2,400 fps 3.250 Hodgdon

Measurement Guide for Reloaders

Powder Charge

Measured in grains (1 grain ≈ 0.065 grams) using precision digital or mechanical scales. Maintaining strict powder weight is crucial for safety and velocity consistency.

Cartridge Overall Length (COAL)

Total length from case base to bullet tip. Checked with digital calipers. Must be within manufacturer's specified range to fit and feed from your firearm's magazine.

Cartridge Base to Ogive (CBTO)

Precision shooters measure to the ogive — the curved part of the bullet that first contacts the rifling — for more accurate bullet seating depth and consistency.

Case Length & Headspace

Brass stretches with firing. Measure case length to know when to trim. Use headspace comparators to check shoulder bump-back during sizing.

Neck Tension

The grip the brass has on the bullet. Measured with ball micrometers by comparing neck wall thickness before and after bullet seating.

Pressure Signs

Inspect fired brass for over-pressure: flattened primers, ejector marks, case head expansion. If unsure, reduce charge and consult your load manual.

Always consult established reloading manuals (Hodgdon, Hornady, Lyman) for your specific bullet and powder combinations. For experienced reloaders only.

Loading your own? Handloading data for every cartridge we cover

Technical Specifications

Bullet Diameter8.22 mm
Case Length57.0 mm
Max Chamber Pressure35,000 PSI
TypeRifle

Compatible Firearms (0)

No firearms found for this caliber.