Hornady Custom 357 Magnum 158 Grain XTP JHP Ammo - Box of 25

The Hornady Custom 357 Magnum 158 Grain XTP JHP is a centerfire handgun round engineered for reliable performance in revolvers and pistols chambered in .357 Magnum. If you're loading for hunting, defensive carry, or range work with a revolver, this cartridge pairs a proven bullet design with brass and powder matched for consistent velocity and chamber pressures that Hornady's reloading expertise has refined across decades of ammunition production.

Each round starts with brass that Hornady manufactures to its own specifications—selected and processed for reliable feeding, corrosion resistance, and the structural integrity needed to safely contain maximum chamber pressures. The XTP (eXtreme Terminal Performance) bullet is a hollow-point jacketed design that has earned its reputation through field use across hunting and defensive applications. Hornady pairs that bullet with a powder charge and primer specifically selected to match the load's velocity window, chamber pressure requirements, and ignition characteristics, resulting in lot-to-lot consistency you can count on when you're zeroing a load or stepping up to the firing line.

This is not budget plinking ammo—it's purpose-built for shooters who understand that component selection matters. Whether you're running a classic .357 revolver or a modern lever-action rifle, the 158-grain XTP delivers the kind of terminal performance and accuracy that separates custom ammunition from commodity rounds.

Key Features

• XTP hollow-point bullet design for controlled expansion and penetration
• Hornady-manufactured brass selected for consistent feeding and pressure containment
• Powder and primer matched to the specific load for velocity consistency and reliable ignition
• Produced to tight tolerances for lot-to-lot repeatability
• 25 rounds per box

Specifications

Caliber	.357 Magnum
Bullet Weight	158 grains
Bullet Type	XTP JHP (eXtreme Terminal Performance Jacketed Hollow Point)
Rounds Per Box	25
Manufacturer	Hornady
Product Line	Hornady Custom

Frequently Asked Questions

What revolvers and pistols will fire this ammo?

Hornady Custom 357 Magnum is chambered for revolvers and rifles designed for .357 Magnum. Common revolvers include Ruger, Smith & Wesson, and similar centerfire revolvers marked .357 Magnum. Some lever-action rifles are also chambered in .357 Magnum—always verify your firearm's chamber marking before loading.

Is this ammo suitable for hunting?

Yes. The 158-grain XTP bullet is designed for terminal performance, making it suitable for hunting applications within the .357 Magnum's effective range. The controlled expansion and penetration characteristics of the XTP hollow point have proven reliable in the field.

Can I reload this brass?

Hornady manufactures the brass in this Custom line specifically for reliability and durability across reloading cycles. Once fired, the brass can be cleaned, inspected, and reloaded according to Hornady reloading data and safe handloading practices.

How does Hornady Custom differ from other Hornady ammo lines?

Hornady Custom ammunition is built with Hornady-manufactured brass and component pairing designed for consistency and performance. Each element—brass, powder, and primer—is selected to match the specific load, which is reflected in tighter velocity and pressure tolerances compared to economy or bulk lines.