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The Hornady Custom .357 Sig 147 grain comes locked and loaded with the company's proven XTP (Extreme Terminal Performance) bullet design. This is factory ammunition built with the same attention to detail you'd put into handloads, but with the convenience and consistency of a mass-produced cartridge.
The 147-grain XTP is engineered for a specific job. Rather than explosive expansion that fragments, it delivers controlled, uniform bullet opening paired with deep penetration. Testing shows this load achieves solid barrier performance while maintaining bullet integrity. The brass case is carefully selected for reliable feeding, corrosion resistance, and the ability to handle maximum chamber pressures.
Every single round gets hand-inspected before it leaves Hornady's facility. The powder is loaded to exact specifications to keep pressure and velocity consistent from one box to the next, which matters a lot if you shoot regularly or rely on this ammo. The primers are individually matched to each load and selected specifically for their ability to ignite the powder charge quickly and completely. This level of attention shows up downrange.
You're getting 1225 feet per second and 490 foot-pounds of energy from this load. That velocity and energy combination is what makes the .357 Sig interesting to people who want more punch than standard 9mm without switching to a completely different caliber. The 147-grain weight is heavier than the typical 125-grain .357 Sig loads but still achieves solid velocity, making it suitable for both defense and practice.
The 147-grain is heavier than typical .357 Sig loads but still maintains solid velocity at 1225 fps. It trades some of the lighter bullet's velocity for a bit more mass and penetration, making it a legitimate option especially if your firearm groups well with it. Most .357 Sig ammo runs 125-grain, so this is a good choice if you want to experiment with heavier projectiles without needing to handload.
Yes, the brass cases are reloadable. Hornady produces most of its Custom line brass in-house and selects all other brass to high standards for reliable feeding and proper hardness, so these cases hold up well to multiple loading cycles.
The XTP is designed for controlled, uniform expansion rather than fragmentation. It maintains most of its weight after impact while opening predictably, which helps it perform consistently across different barriers and velocities. It's a proven hollow point bullet with decades of field use behind it.
Hornady Custom ammunition is hand-inspected and loaded to tighter tolerances than standard lines. Each round gets individual quality checks, powders and primers are matched to each specific load, and components are selected to higher standards. It's positioned between their economy lines and premium duty ammo like Critical Duty.
| UPC | 090255391312 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 9131 |
| Caliber/Gauge | .357 Sig |
| Case Material | Brass |
| Grains | 147Gr |
| Length | 3.2000 |
| Model | |
| Product Type | XTP |
| Shipping Weight | 0.7625 |
| Units per Box | 20 |
| Cost per Round | 1.45 |
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