Winchester .400-inch 155 grain Silvertip bullets are component projectiles for centerfire handgun ammunition reloading. Winchester’s component catalog identifies WB40ST155X as a .40/10mm, .400-inch diameter, 155 grain plated JHP Silvertip bullet supplied 100 per box.
The Silvertip component uses Winchester’s plated jacketed hollow point design. This description is limited to verified manufacturer specifications without adding unsupported terminal-performance claims.
These are component bullets only, not loaded .40 S&W or 10mm ammunition. They are intended for compatible .40/10mm handgun reloading applications using appropriate published data and correctly matched components.
Each box contains 100 Winchester component handgun bullets.
Key Features
- Winchester Silvertip component bullets
- .400-inch bullet diameter
- 155 grain bullet weight
- Plated jacketed hollow point design
- 100 bullets per box
Manufacturer Specifications
- Manufacturer: Winchester
- MPN: WB40ST155X
- Caliber: .40/10mm
- Bullet Diameter: .400 inch
- Bullet Weight: 155 grains
- Bullet Type: Plated JHP Silvertip
- Quantity per Box: 100





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