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Underwood ammo runs hot, and this load proves it. The .357 Magnum 125 grain JHP pairs Hornady's proven XTP bullet with Underwood's carefully engineered powder charge, delivering 1700 feet per second and 802 foot-pounds of energy at the muzzle. That velocity is serious business, so make sure you're shooting this in a steel-frame revolver that can handle it.
The 125 grain weight has built a legendary reputation in the .357 world. It shoots flatter and hits harder than heavier bullets, making it a natural choice for both hunting and defensive work. The Hornady XTP bullet is engineered for controlled expansion and deep penetration, which means reliable performance when it matters. Flash-suppressed powder means your vision stays intact if you ever need to shoot in low light.
Each round comes in nickel-plated brass that won't tarnish in storage the way standard brass can. The nickel plating improves feeding reliability and makes cleanup easier if you reload. These are boxer-primed cases, so reloaders can safely process them multiple times. For handloaders, nickel-plated brass historically gave fewer reloading cycles than raw brass, but modern processes have fixed that.
Underwood manufactures this in the USA and field tests with real-world firearms to make sure it actually delivers on the advertised ballistics. New production, non-corrosive, and backed by Underwood's warranty. Each box holds 20 rounds.
This is a full-power load designed for steel-frame revolvers. If you have a revolver made from aluminum or scandium alloy, Underwood doesn't recommend firing this ammunition in them due to the recoil and potential for bullets to jump the crimp. Always verify your revolver can handle full-power .357 Magnum before purchasing.
Yes. Flash-suppressed powder reduces muzzle flash to help preserve your night vision if you ever need to shoot in darkness. Standard full-power .357 loads can create blinding muzzle flash, but Underwood formulates specifically to control this issue. It's a practical feature for defensive use.
Absolutely. The nickel-plated brass cases are boxer-primed and reloadable. Many handloaders prefer nickel-plated brass because it won't tarnish in storage and cleans up easier. The modern nickel plating process now holds up to multiple reloading cycles nearly as well as raw brass.
The 125 grain load shoots faster and flatter, making it popular for target work and defensive carry. The 158 grain is heavier and produces more recoil but maintains velocity better over distance, making it a solid hunting choice. The .357 works well with both weights depending on your intended use.
| UPC | 816874020439 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 123 |
| Caliber/Gauge | .357 Magnum |
| Case Material | Nickel-Plated Brass |
| Grains | 125 gr |
| Length | 2.7000 |
| Shipping Weight | 0.67 |
| Units per Box | 20 |
| Cost per Round | 1.15 |
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