What twist rate does .41 Remington Magnum use?

.41 Remington Magnum typically uses a 1:18.75 twist rate.

What bullet diameter is .41 Remington Magnum?

.41 Remington Magnum uses a 0.41″ (10.414 mm) diameter bullet.

Is .41 Remington Magnum still in production?

.41 Remington Magnum is active; typical availability is common.

What is .41 Remington Magnum used for?

.41 Remington Magnum is primarily used for hunting, self-defense.

What are the best powders for .41 Remington Magnum?

Reloading powders commonly listed for .41 Remington Magnum include N350, Herco, Enforcer, Blue Dot, among 9 suitable options.

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Revolver · SAAMI

.41 Remington Magnum

Also known as .41 Magnum

Smith & Wesson and Remington's 1964 hunting revolver cartridge.

Caliber: 0.41″ · 10.414 mm
Introduced: 1964
Case: Rimless
Primary use: Hunting, Self-Defense
Status: Active

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VelocityBeing verified

EnergyBeing verified

Typical grains175 · 210 · 265 gr

Identity

Introduced: 1964
Type: Revolver
Origin: United States
Inventor: Elmer Keith, Bill Jordan and Skeeter Skelton (with Remington)
Manufacturer: Remington Arms
Standard: SAAMI
Status: Active
Availability: Common

Build

Case capacity: 35 gr H₂O
Twist (typical): 1:18.75
Primer: Boxer Small Pistol
Case type: Rimless

Pressure & range

Max pressure: 36,000 psi, SAAMI transducer
Eff. range: 100 yd
Max range: 2200 yd
Recoil: 10–16 ft·lb
Subsonic: Capable

Introduced by Remington Arms

Ballistics

Published velocity/energy data isn't available for .41 Remington Magnum.

Performance

Best for Withheld until verified

Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

SAAMI · approximate

Measure	mm	in	✓
Bullet ⌀	10.41	0.410	✓
Neck ⌀	11.02	0.434	✓
Shoulder ⌀	n/a
Shoulder angle	n/a
Base ⌀	11.02	0.434	~
Rim ⌀	12.50	0.492	✓
Belt ⌀	n/a
Rim thickness	1.52	0.060	✓
Neck length	n/a
Case length	32.77	1.290	✓
Overall length	40.39	1.590	✓

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .41 Remington Magnum is highlighted below.

Factory loads

Verification

Being verified

Advertised FPS, energy, and BC are withheld until loads clear verification.

Suitable powders

9 reloading powders listed for .41 Remington Magnum, fastest to slowest. Cross-reference in the finder →

Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Powder $/lb Charge (gr) Bullet $/ea Primer $/ea Brass reuses Brass $/ea

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Firearms chambered in .41 Remington Magnum

Ruger Ruger GP100 .41 Mag 4.2-inchHenry Repeating Arms Big Boy .41 MagHenry Repeating Arms Henry Big Boy .41 Mag 20-inchHenry Repeating Arms Big Boy .41 Magnum 20-inchSmith & Wesson S&W Model 57 ClassicSmith & Wesson Model 357 Night GuardHenry Repeating Arms Big Boy .41 Mag 20-inchRuger Ruger Redhawk .41 Mag 7.5-inchSmith & Wesson Model 357 .41 Mag 6-inchThompson/Center Arms Contender G2 44 Rem Mag 10-inchFreedom Arms Freedom Arms Model 97 .41 Mag 5.5-inchTaurus Raging Bull .41 Mag 6.5-inch

Lineage

Family TreeOpen .41 Remington Magnum in the interactive cartridge family tree

Connected reference

Reloading9 suitable powders — cross-reference

History

Smith & Wesson and Remington introduced this magnum revolver cartridge in 1964, designed to fill the gap between .357 Magnum and .44 Magnum. Initially conceived as a police cartridge with better terminal performance than .357 Mag but less recoil than .44 Mag. Never achieved the market penetration S&W hoped for; overshadowed by .357 and .44 Magnum.

FAQs

What twist rate does .41 Remington Magnum use?: .41 Remington Magnum typically uses a 1:18.75 twist rate.
What bullet diameter is .41 Remington Magnum?: .41 Remington Magnum uses a 0.41″ (10.414 mm) diameter bullet.
Is .41 Remington Magnum still in production?: .41 Remington Magnum is active; typical availability is common.
What is .41 Remington Magnum used for?: .41 Remington Magnum is primarily used for hunting, self-defense.
What are the best powders for .41 Remington Magnum?: Reloading powders commonly listed for .41 Remington Magnum include N350, Herco, Enforcer, Blue Dot, among 9 suitable options.

Sources & provenance

Standard SAAMI — ANSI/SAAMI Z299.3-2022 — Centerfire Pistol & Revolver Voluntary Performance Standards · representative_gun, grain_ballistics archived
Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived
Standard SAAMI — SAAMI cartridge & chamber drawing — .41 Remington Magnum archived
Manufacturer Federal — Power-Shok Handgun 41 Rem Magnum, 210 Grain JHP (SKU C41A) · grain_ballistics, representative_gun archived
Manufacturer Hornady — 41 Mag 190 gr FTX LEVERevolution (Item #9078) · representative_gun, grain_ballistics archived
Manufacturer Hornady — 41 Rem Mag 210 gr XTP (Item #9077) · representative_gun, grain_ballistics archived
Manufacturer Remington — High Terminal Performance 41 Rem Magnum, 210 Grain JSP (SKU 23000) · grain_ballistics, representative_gun archived
Manufacturer Buffalo Bore — Heavy .41 Magnum Pistol & Handgun Ammunition (Item 16A) · representative_gun, grain_ballistics archived

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 70 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →

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