.44-40 Winchester

Rifle Also: .44-40, .44 WCF

🔧 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
200 gr (13.0 g) LRNFP	Hodgdon H4198	17.0 gr 1.1 g	19.0 gr 1.23 g	1,100 fps	1.592	Hodgdon
200 gr (13.0 g) LRNFP	IMR 4198	16.5 gr 1.07 g	18.5 gr 1.2 g	1,080 fps	1.592	IMR
200 gr (13.0 g) LRNFP	Alliant 2400	16.0 gr 1.04 g	18.0 gr 1.17 g	1,150 fps	1.592	Alliant
200 gr (13.0 g) LRNFP	Hodgdon Lil'Gun	15.5 gr 1.0 g	17.5 gr 1.13 g	1,180 fps	1.592	Hodgdon
200 gr (13.0 g) LRNFP	Hodgdon H110	18.0 gr 1.17 g	20.5 gr 1.33 g	1,200 fps	1.592	Hodgdon
200 gr (13.0 g) LRNFP	Hodgdon H4227	16.0 gr 1.04 g	18.0 gr 1.17 g	1,120 fps	1.592	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.