Winchester Super X 357 Magnum 158gr JSP Ammo - 50 Rounds X3575P

The Winchester Super X X3575P delivers consistent .357 Magnum performance with 158-grain jacketed soft point bullets engineered for controlled expansion and deep penetration. This proven ammunition combines Winchester's century of manufacturing expertise with modern powder technology to produce reliable ignition and uniform velocities across temperature ranges.

What Makes This Different

Winchester's Super X line utilizes carefully selected powders and primers to achieve consistent muzzle velocities of approximately 1,235 fps from a 4-inch barrel. The jacketed soft point design expands reliably while maintaining structural integrity for maximum energy transfer. Unlike full metal jacket rounds, the exposed lead tip initiates expansion on impact while the copper jacket controls deformation for optimal penetration depth.

Key Features

• 158-grain jacketed soft point bullets for controlled expansion
• Boxer-primed brass cases suitable for reloading
• Consistent powder charges delivering uniform velocities
• 50-round boxes with 10 boxes per case (500 total rounds)
• Compatible with all .357 Magnum and .357 Maximum firearms
• Non-corrosive primers for reliable ignition
• Manufactured to SAAMI specifications for safety

This ammunition performs effectively in both revolver and lever-action rifle platforms. The 158-grain weight provides excellent momentum retention for hunting medium game or personal protection applications. The soft point construction ensures reliable feeding in tubular magazine rifles while delivering expansion characteristics suitable for defensive use. Temperature-stable powder formulation maintains consistent performance from -20°F to 140°F.

Technical Specs

• Caliber: .357 Magnum
• Bullet Weight: 158 grains
• Bullet Type: Jacketed Soft Point (JSP)
• Muzzle Velocity: ~1,235 fps (4-inch barrel)
• Muzzle Energy: ~535 ft-lbs
• Case Material: Reloadable brass
• Primer: Non-corrosive Boxer
• Quantity: 50 rounds per box, 10 boxes per case
• Manufacturer: Winchester Ammunition
• UPC: 020892201453

Winchester Super X ammunition represents proven ballistic performance backed by consistent quality control standards. The bulk case packaging provides excellent value for high-volume shooters while maintaining the reliability expected from Winchester's flagship hunting and defense line.