Guide

.41 Magnum (41 Remington Magnum) Ammo Guide

By Cole Harlan, EditorUpdated Nov 5, 2026How we verifyEditorial standards

We load-checked five factory .41 Magnum loads on Federal's, Remington's and Hornady's own product pages on November 5, 2026: one from Federal, two from Remington and two from Hornady. The .41 Magnum is the same cartridge as the 41 Rem Mag, and SAAMI names it 41 Remington Magnum. Muzzle velocity and energy below are copied from those maker pages. We don't list prices or use retailer ballistics. Test barrels differ, and SAAMI's solid test barrel is 10.135 in (257.43 mm). We do not rank loads across makers.

Factory loads we checked

Maker	Item	Load	gr	Muzzle fps	Muzzle ft-lb	Test barrel	Source
Federal	C41A	Power-Shok Handgun 210 gr JHP	210	1,230 fps	705 ft-lb	4-V	Federal page
Remington	R20225	Core-Lokt Handgun 210 gr Core-Lokt HP	210	1,240 fps	717 ft-lb	—	Remington page
Remington	23000	High Terminal Performance 210 gr JSP	210	1,300 fps	788 ft-lb	—	Remington page
Hornady	9077	210 gr XTP (Custom)	210	1,545 fps	1,113 ft-lb	10 in	Hornady page
Hornady	9078	LEVERevolution 190 gr FTX	190	1,620 fps	1,107 ft-lb	10 in	Hornady page

A dash means the maker page prints no test barrel. Barrels differ (Federal 4-V, Hornady 10 in, Remington none printed), so these loads are not ranked against each other.

SAAMI pressure

SAAMI lists a maximum average pressure (MAP) of 36,000 psi for 41 Remington Magnum, measured by transducer (printed as 360 psi/100), in ANSI/SAAMI Z299.3-2022 (SAAMI PDF). The test barrel is 10.135 in (257.43 mm) SOLID. SAAMI also prints a vented length of 5.788 in and a vented segment of 4.000 in, with a twist of 18.75 in R.H. and 6 grooves. Transducer MPLM is 37,100 psi and MPSM is 38,800 psi. The standard also prints crusher values of 40,000, 41,300 and 43,200 CUP; we quote the transducer figure as the series rule. See every cartridge on the SAAMI MAP pressure chart.

Hunting and lever-gun lines, by maker name

We group loads only by the maker's own line names. Power-Shok Handgun, Core-Lokt Handgun, High Terminal Performance, Custom (XTP) and LEVERevolution (FTX) are the product names these makers use for these loads. We do not rank them or recommend one over another.

Test barrels differ

Federal prints 4-V on C41A, Hornady lists 10 in on both 9077 and 9078, Remington prints no test barrel on either load, and SAAMI's solid test barrel is 10.135 in. Maker muzzle velocity and energy are not SAAMI reference velocities. We show maker numbers as printed and do not reconcile or rank them across makers or barrels.

Not yet verified: Winchester, Speer, CCI and SIG were not fetched. We do not list SAAMI reference velocities. Checked November 5, 2026.

See the SAAMI MAP chart, the .44 Magnum ammo guide, the .357 Magnum ammo guide, the .454 Casull ammo guide and all ammo releases.

Frequently asked questions

What is the SAAMI MAP for .41 Magnum?

36,000 psi by transducer (printed as 360 psi/100) for 41 Remington Magnum in ANSI/SAAMI Z299.3-2022, with a 10.135 in (257.43 mm) solid test barrel.

Is .41 Magnum the same as 41 Rem Mag?

Yes. .41 Magnum and 41 Rem Mag are the same cartridge. SAAMI's name for it is 41 Remington Magnum.

Which makers are covered in this guide?

Federal (one load), Remington (two loads) and Hornady (two loads), checked on their own product pages on Nov. 5, 2026.

Why do the listed test barrels differ?

Federal prints 4-V, Hornady lists 10 in on both loads, Remington prints none, and SAAMI's solid test barrel is 10.135 in. We show the numbers as printed and do not rank loads across makers.

What is not yet verified in this guide?

Winchester, Speer, CCI and SIG were not fetched.

.41 Magnum (41 Remington Magnum) Ammo Guide

Factory loads we checked

SAAMI pressure

Hunting and lever-gun lines, by maker name

Test barrels differ

Frequently asked questions

Sources

Keep exploring

Factory loads we checked

SAAMI pressure

Hunting and lever-gun lines, by maker name

Test barrels differ

Related

Frequently asked questions

Sources

Keep exploring

The Gun Release Report