Guide

.327 Federal Magnum Ammo Guide

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

We load-checked seven factory .327 Federal Magnum loads on Federal's and Hornady's own product pages on November 5, 2026: six from Federal and one from Hornady. Muzzle velocity and energy below are copied from those maker pages. We don't list prices or use retailer ballistics. Federal lists a 4-V (4 in vented) test barrel on five of six loads and does not list a barrel on HammerDown LG327F1; Hornady lists a 5 in test barrel. SAAMI's solid test barrel for the cartridge is 5.000 in (127.00 mm).

Factory loads we checked

Maker	Item	Load	gr	Muzzle fps	Muzzle ft-lb	Test barrel	Source
Federal	AE327	American Eagle Handgun 100 gr Jacketed Soft Point	100	1,500 fps	500 ft-lb	4-V	Federal page
Federal	AE327A	American Eagle Handgun 85 gr Jacketed Soft Point	85	1,400 fps	370 ft-lb	4-V	Federal page
Federal	P327SA	Swift A-Frame 100 gr Swift A-Frame	100	1,500 fps	500 ft-lb	4-V	Federal page
Federal	P327HST1S	Personal Defense HST 104 gr HST Jacketed Hollow Point	104	1,500 fps	520 ft-lb	4-V	Federal page
Federal	PD327HS1+H	Personal Defense Hydra-Shok Low Recoil 85 gr Hydra-Shok	85	1,400 fps	370 ft-lb	4-V	Federal page
Federal	LG327F1	HammerDown 127 gr Bonded Hollow Point	127	1,650 fps	768 ft-lb	Not listed	Federal page
Hornady	Critical Defense (80 gr FTX)	Critical Defense 80 gr FTX	80	1,475 fps	386 ft-lb	5 in	Hornady page

Federal prints 4-V on five loads and lists no test barrel on LG327F1. Hornady prints 5 in. Loads are not ranked across different barrel lengths.

SAAMI pressure

SAAMI lists a maximum average pressure (MAP) of 45,000 psi for 327 Federal Magnum, measured by transducer (printed as 450 psi/100), in ANSI/SAAMI Z299.3-2022, p.21 (SAAMI PDF). The test barrel is 5.000 in (127.00 mm) SOLID; the drawing also shows a vented barrel of 5.591 in and a twist of 16.00 in L.H. Crusher is Not Established. MPLM is 46,400 psi and MPSM is 48,500 psi. See every cartridge on the SAAMI MAP pressure chart.

Defense and hunting lines, by maker name

We group loads only by the maker's own line names. Personal Defense HST, Personal Defense Hydra-Shok Low Recoil and Critical Defense are defense-oriented lines. Swift A-Frame and HammerDown are hunting and woods lines. American Eagle Handgun is Federal's range and training line. We do not rank these loads or recommend one over another.

Barrel note

Federal lists 4-V, Hornady lists 5 in, and SAAMI's solid test barrel is 5.000 in (vented 5.591 in). Maker muzzle velocity and energy are not SAAMI reference velocities (SAAMI Test Bbl references: 100 gr 1,600 fps; 115 gr 1,535 fps). We show maker numbers as printed and do not reconcile them across barrels.

Not yet verified: Remington Golden Saber 29-29327 appeared in a sitemap but its caliber was not confirmed this round, so it is left out. Speer, Winchester, Buffalo Bore and CCI were not checked. We have no barrel-length-velocity page for .327 Federal Magnum. Checked November 5, 2026.

See the SAAMI MAP chart, the .32 H&R Magnum ammo guide, the .32 Auto ammo guide, the .357 Magnum ammo guide, the .38 Special ammo guide, the 9mm ammo guide and all ammo releases.

Frequently asked questions

What is the SAAMI MAP for .327 Federal Magnum?

45,000 psi by transducer (printed as 450 psi/100) in ANSI/SAAMI Z299.3-2022, with a 5.000 in (127.00 mm) solid test barrel. Crusher is Not Established.

Which makers are covered in this guide?

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

Why do Federal, Hornady and SAAMI list different test barrels?

Federal prints 4-V on five loads and none on LG327F1, Hornady prints 5 in, and SAAMI's solid test barrel is 5.000 in. We show the numbers as printed and do not rank loads across barrels.

Which .327 Federal Magnum loads are not yet verified?

Remington Golden Saber 29-29327 appeared in a sitemap but its caliber was not confirmed this round. Speer, Winchester, Buffalo Bore and CCI were not checked.

.327 Federal Magnum Ammo Guide

Factory loads we checked

SAAMI pressure

Defense and hunting lines, by maker name

Barrel note

Frequently asked questions

Sources

Keep exploring

Factory loads we checked

SAAMI pressure

Defense and hunting lines, by maker name

Barrel note

Related

Frequently asked questions

Sources

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