Winchester Ammo Centerfire Handgun Reloading 357 Mag .357 158 Gr Jacketed Hollo. 357 158 gr Jacketed Hollo - Bullets are custom-designed and manufactured to precise specifications to deliver specific on-target performance characteristics. These characteristics vary depending on bullet design. Winchester carries a variety of component bullets for both centerfire rifle and handgun ammunition. Specifications for Winchester Ammo Centerfire Handgun Reloading 357 Mag .357 158 Gr Jacketed Hollo WB357H158D: Manufacturer: Winchester Bullet Type: Hollow Point (HP) Jacketed Hollow Point (JHP) Caliber: .357 Magnum Bullet Weight: 158 grain Quantity: 1 Core Material: Lead Condition: New Fabric/Material: Copper Winchester Ammo Centerfire Handgun Reloading 357 Mag .357 158 Gr Jacketed Hollo WB357H158D