Winchester 296 Smokeless Gun Powder

Winchester Smokeless Powders have been around since the late 1800s. Customers that have shot Winchester factory loaded ammunition know that quality of propellant they’re receiving as soon as the first shot is fired. Bring that quality home to the reloading bench with the Winchester family of powders.

The 296 powder was developed for the 357 Magnum and 44 Remington Magnum cartridges. Winchester also recommends this propellant for use in 410 Bore AA loads.

Built for Big Handgun Power

When you want magnum performance from a ball-type powder, Winchester 296 delivers. Developed specifically for large handgun cartridges, W296 is an excellent choice for loading .357 Magnum and .44 Remington Magnum rounds where high loading density and strong muzzle energy matter. Its formulation gives you consistent pressures and the velocity needed for heavy bullets to perform on-target.

Also Works for Shotshells 410 Bore Applications

Winchester recommends 296 not only for magnum revolver work but also for 410-bore AA shotshells a versatile touch that makes this powder attractive to reloaders who do both handgun and shotshell loading. Expect reliable ignition and predictable results when you follow published shotshell data.

Spherical (Ball) Form Excellent Metering & Flow

W296’s ball (spherical) character meters smoothly through powder measures and dribbles less than many extruded powders, so it’s friendly on both progressive and single-stage presses. That consistent flow reduces charge variance and speeds up high-volume reloading while keeping your batches tight and repeatable.

High Loading Density for Optimal Velocity

Because of its density and burn characteristics, W296 provides good case-fill and efficient energy transfer, allowing reloaders to reach magnum velocities without excessive pressures when using recommended load recipes. That characteristic makes it a trusted option for shooters chasing maximum performance from heavy handgun bullets.

Practical Notes Temperature & Reduced Loads

W296 sits among the slower-burning pistol powders on the burn-rate charts, so it’s excellent for magnum applications but not ideal for very light/reduced loads where low load density can upset the burn characteristics. Use manufacturer load data, start at published starting charges, and don’t substitute blindly between powders.

Other Important Information:

• Do not exceed the loads displayed in the reloaders guide.
• Never mix any two powders regardless of type, brand, or source.
• Never substitute any smokeless powder for Black Powder or any Black Powder substitute.