Winchester AUTOCOMP is a ball powder intended for use in competition race guns. A superb choice for 38 Super, 9mm, 45 ACP, and 40 S&W, with a proper burn speed to feed the compensators with a bigger amount of gas. Competitors use AUTOCOMP to fire faster shots with less muzzle flash.
- 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.