Handloads: A Subsonic .357 Mag. Rifle Load

by
posted on October 15, 2024
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
.357 Mag. cartridge rendering full length left to right with cartridge atop shown casehead stamp: HORNADY 357 MAG
Design by David Labrozzi.

In a lever-action rifle, the .357 Mag. offers tremendous utility to the target shooter, varminter or even the short-range whitetail deer hunter. Loading this cartridge with easily expanding pistol bullets helps it retain its lethality while offering flexibility in the velocity department. When all is said and done, it’s quite simple to make a .357 that is effective and, with the right equipment, exceptionally quiet.

.357 Mag. Rifle Load specification table chart information on ammunition recipe components and testing perametersMy recipe starts with Hornady brass, as it’s one of the least expensive options on the market while still offering excellent ductility. Like most, these take small pistol primers, and given the components that follow, I cap them with CCI Small Pistol Magnums. This product lights more powder during ignition, creating a cleaner, more even burn in reduced loads like this. Several propellants can get the job done, but I’ve found Hodgdon Titegroup to stand head and shoulders above the rest in this application. Aside from creating lower standard deviations, it takes much less than the others to achieve the same velocity. I recommend grabbing a pound, as the same is true for several .38 Spl., 9 mm Luger and .45 ACP recipes.

The bullet I used is the 180-grain Hornady XTP hollow point. Calculated serrations and a variable jacket thickness create predictable expansion even at subsonic velocities, making them excellent for use on possums, raccoons, coyotes and, with careful shot placement, whitetail deer at distances inside 100 yards. A gentle flare is needed to seat them without disturbing the jacket. I’ve achieved my best results by setting up a Hornady Custom seating die with a quarter turn of crimp and letting the case swallow the cannelure.

This load has become a favorite with guests due to its accuracy and surprisingly flat trajectory across our hunting-themed course. Recoil-sensitive shooters also find favor with it, as dropping velocity also drops kick. Above all, the neighbors love it, as the only noise they have to deal with is the distant ringing of a steel target.

Latest

.308 Win.
.308 Win.

Handloads: A Quiet .308 Win. For Large-Format Pistols

Of the many commercial .308 Winchester loads, few, if any, are designed for barrels shorter than 16". The one that follows helps address this gap while remaining simple to suppress and light on the wrists.

Court Approves Watchtower Firearms DIP Financing

Watchtower Firearms was granted final approval for debtor-in-possession (DIP) financing by the U.S. Bankruptcy Court for the Northern District of Texas in late June.

Review: Ruger LC Carbine In 10 mm Auto

Following the success of its .45 ACP-chambered LC Carbine, Ruger realized that this platform would go a long way toward making the 10 mm Auto more controllable and fun to shoot, and a new 10 mm version was released in 2024.

The Armed Citizen® July 14, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Favorite Firearms: A Little Stevens From Chicago

"Over the next five or six years, and before I went off to college, I fired hundreds and hundreds of rounds of .22 BB Caps, CB Caps, Shorts and Longs through this rifle."

Preview: Strike Industries T-Bone Charging Handle

The T-Bone from Strike Industries is an ideal fit for suppressed applications, as it can be configured by the user to redirect gas blowback entirely to either side ...

Interests



Get the best of American Rifleman delivered to your inbox.