CorBon Pow'rBall .357 MAG 100 Grain Polymer-Tipped Ammo - 20 Rounds (PB357100)
- Capacity-Rounds:
- 20
- Caliber-Gauge:
- 357 Magnum
- Grain:
- 100
CorBon Pow'rBall .357 MAG 100 Grain Polymer-Tipped Ammo is purpose-built for shooters who demand reliable expansion and dependable feeding from their magnum handguns. This 20-round box pairs CorBon's reputation for quality with a distinctly engineered projectile design—the polymer-tipped bullet uses a gilding metal jacket around a lead core shaped into a patented V-cavity, topped with a round polymer ball that's crimped and held firmly in place. Whether you're running a revolver or semi-automatic for defense, hunting, or range work, Pow'rBall ammunition is engineered to perform when it matters.
The polymer ball design serves multiple purposes in the real world. During flight, it improves aerodynamics by dispersing air around the projectile, translating to better ballistics downrange. On the feed ramp, the rounded profile enhances reliability in auto pistols—a critical advantage if you're trusting this round for duty or defensive carry. The real engineering shows on impact: the polymer ball delays expansion just long enough to allow several inches of penetration before it's displaced, then exposes the V-shaped lead cavity underneath to initiate full, controlled expansion. Unlike traditional hollow points that can be defeated by heavy clothing or intermediate materials, the polymer cap protects the cavity from being plugged, ensuring the round expands as designed even in worst-case scenarios.
If you shoot .357 Magnum and want ammunition that balances precision, reliability, and performance across different platforms and conditions, CorBon's Pow'rBall delivers the engineering that justifies the load.
Key Features
- Polymer-tipped design improves aerodynamics and penetration control
- Patented V-shaped lead cavity for controlled, reliable expansion
- Enhanced feeding in semi-automatic pistols
- Polymer cap protects hollow point cavity from plugging
- 20 rounds per box
Specifications
| Caliber | .357 Magnum |
| Bullet Weight | 100 Grains |
| Bullet Type | Polymer-Tipped, Gilding Metal Jacket |
| Rounds Per Box | 20 |
Frequently Asked Questions
Will CorBon Pow'rBall .357 MAG ammunition feed reliably in my semi-automatic pistol?
Yes. The rounded polymer-tipped design is specifically engineered to enhance feeding in auto pistols, making it a solid choice if you carry or shoot a semi-automatic .357 Magnum handgun.
What makes the polymer ball different from a standard hollow point?
The polymer ball serves three functions: it improves aerodynamics in flight, delays expansion on impact to ensure proper penetration, and—critically—protects the hollow point cavity from being plugged by clothing or other material, ensuring expansion even in worst-case scenarios.
Is this ammunition suitable for hunting with a .357 Magnum revolver?
CorBon Pow'rBall is engineered for expansion and penetration, making it a viable choice for hunting with .357 Magnum. Verify it meets your local hunting regulations and is appropriate for your intended game.
How many rounds come in a box?
Each box contains 20 rounds.
Ammunition Restrictions:
You must be 18 years or older to purchase shotgun or rifle ammunition, and 21 years or older for handgun ammunition. All ammunition must be shipped via Domestic Ground, and shipping is not available for international residents. Residents of CA, DC, IL, MA, NY, CT, and NJ may be subject to additional restrictions. Always ensure you use the appropriate ammunition for your firearms, and check your state and local laws for any other relevant regulations on firearms and ammunition. Due to Department of Transportation regulations, returns on ammo cannot be accepted. Please verify local laws before placing an order.
We are unable to ship ammunition to the following:
- Hawaii
- Alaska
- P.O. Boxes
- APO/FPO Addresses
- International Addresses
- U.S. Territories
- U.S. addresses with zip codes starting with (100, 101, 102)
Illinois residents must provide a copy of a valid FOID Card or Valid Concealed Carry License, along with their IL driver’s license or IL state identification card to purchase ammunition. The ammunition can only be shipped to an address listed on either of those two documents.
Email: [email protected]

