Ballistics (Typical Factory Load)

3,950

Muzzle Velocity

fps

1,300

Muzzle Energy

ft-lbs

40

Typical Bullet

grains

5.2

Bullet Diameter

mm

0.275

Ballistic Coeff.

G1 BC

58,000

Max Pressure

PSI

46.7

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
32 gr (2.1 g) V-Max	Hodgdon H4895	26.0 gr 1.68 g	28.5 gr 1.85 g	3,900 fps	2.260	Hodgdon
32 gr (2.1 g) V-Max	IMR 8208 XBR	26.0 gr 1.68 g	28.5 gr 1.85 g	3,900 fps	2.260	IMR
32 gr (2.1 g) V-Max	Alliant Reloder 10X	25.5 gr 1.65 g	28.0 gr 1.81 g	3,850 fps	2.260	Alliant
39 gr (2.5 g) BlitzKing	Hodgdon H4895	24.5 gr 1.59 g	27.0 gr 1.75 g	3,700 fps	2.260	Hodgdon
40 gr (2.6 g) V-Max	Hodgdon Benchmark	25.0 gr 1.62 g	27.5 gr 1.78 g	3,650 fps	2.260	Hodgdon
40 gr (2.6 g) V-Max	Alliant Reloder 10X	24.5 gr 1.59 g	27.0 gr 1.75 g	3,650 fps	2.260	Alliant

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.