Winchester AutoComp 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.

Winchester AUTOCOMP is a ball powder designed for competition race guns. A perfect burn speed to feed the compensators with a higher volume of gas, it is a great choice for 38 Super, 9mm, 45 ACP and 40 S&W. With AUTOCOMP, competitors get off faster shots with minimal muzzle flash.

Built for Target Shooters & High-Volume Practice

Winchester AutoComp is a spherical smokeless powder engineered with competitive and recreational shotgun shooters in mind. If you chase clay targets, run long trap or skeet sessions, or coach students through repeated drills, AutoComp delivers soft recoil, consistent ignition, and smooth cycling so you stay on target longer and recover faster between shots. It’s the powder that makes long range practice feel effortless and keeps your focus on the target, not the cleanup.

Clean Metering & Fast, Reliable Reloading

AutoComp’s spherical granules meter extremely well through powder measures and dispensers, making it ideal for both progressive and single-stage presses. That predictable flow reduces charge variance and speeds up batch loading, so you can churn out hundreds of uniform shells with confidence. Less variability means tighter patterns, repeatable shot performance, and fewer surprises when you’re testing loads or prepping for competition.

Cleaner Burn, Easier Maintenance

Clean-burning chemistry matters during busy range days. Winchester AutoComp produces reduced residue and lower fouling, which means your barrels and actions stay cleaner longer and semi-automatics cycle more reliably. The practical benefit is simple: more time shooting, less time scrubbing perfect for competitive shooters, instructors, and high-volume reloaders who want dependable performance and easier upkeep.

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.