Winchester AutoComp is a new high performance powder optimized for semi-auto pistol
competition and self defense. It yields faster split times with improved compensator gas
volume in calibers like 9mm Luger, 40 S&W, 38 Super and 45 ACP. All this with less muzzle
flash and clean burning!
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.