.41 Remington Magnum

Pistol

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
170 gr (11.0 g) JHP Hodgdon H110 19.0 gr
1.23 g
21.0 gr
1.36 g
1,350 fps 1.580 Hodgdon
170 gr (11.0 g) JHP Alliant 2400 17.5 gr
1.13 g
19.5 gr
1.26 g
1,300 fps 1.580 Alliant
210 gr (13.6 g) JSP Hodgdon H110 17.0 gr
1.1 g
19.0 gr
1.23 g
1,200 fps 1.580 Hodgdon
210 gr (13.6 g) JSP Alliant 2400 16.0 gr
1.04 g
18.0 gr
1.17 g
1,180 fps 1.580 Alliant
210 gr (13.6 g) JSP Hodgdon Lil'Gun 16.5 gr
1.07 g
18.5 gr
1.2 g
1,220 fps 1.580 Hodgdon
210 gr (13.6 g) LRNFP IMR 4227 16.5 gr
1.07 g
18.5 gr
1.2 g
1,150 fps 1.580 IMR

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

TypePistol

Compatible Firearms (1)