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CorBon Pow'rBall .357 SIG 100 grain polymer-tipped ammunition brings a thoughtful engineering approach to defensive and duty pistol loads. The distinctive polymer ball tip isn't just for show—it's a functional design that addresses real-world performance needs for shooters who depend on their sidearm. Whether you're running a modern striker-fired compact or a service pistol, this round is built to perform when it matters.
The Pow'rBall design centers on controlled expansion and reliable feeding. That polymer cap sits atop a gilding metal jacket encasing a lead core shaped into a V-cavity. During impact, the polymer ball delays expansion just long enough for the bullet to penetrate several inches before the tip is pushed aside, exposing the V-shaped hollow point and triggering full, consistent expansion. This sequencing keeps the round from opening too early while preventing the common hollow-point failure mode: plugged cavities from clothing or intermediate barriers that render expansion unreliable. For defensive shooters in real-world environments, that's a meaningful advantage over conventional hollow points.
The aerodynamic benefit of the polymer ball improves ballistic stability in flight, and the design also enhances feeding reliability in semi-automatic pistols—a practical plus for duty loads or defensive carry where feeding hiccups aren't an option. CorBon loads these to genuine defensive standards, so you're getting ammunition built with the same precision and testing that goes into their rifle lines.
| Caliber | .357 SIG |
| Bullet Weight | 100 grain |
| Bullet Type | Polymer-tipped, gilding metal jacket, lead core |
| Rounds Per Box | 20 |
| Brand | CorBon |
.357 SIG ammunition is chambered in .357 SIG-designated firearms. Always verify your firearm's chamber marking before loading any ammunition. The Pow'rBall design includes enhanced feeding characteristics for semi-automatic pistols.
The polymer ball serves multiple purposes: it improves aerodynamic performance in flight, protects the hollow point cavity from being plugged by clothing or barriers, and delays expansion just long enough to ensure the bullet penetrates several inches before the V-shaped cavity fully expands. This addresses common failure modes with conventional hollow points in defensive scenarios.
CorBon Pow'rBall ammunition is engineered with defensive performance in mind. The design prioritizes controlled expansion and penetration characteristics, and the enhanced feeding reliability is valued for duty and defensive applications.
Each box contains 20 rounds of CorBon Pow'rBall .357 SIG 100 grain ammunition.
SKU: 119716488 • Width: 2.6in • Height: 1.5in • Depth: 3.2in • Weight: 0.56oz