AUTOCOMP is extremely fine in the 38 Super, 9mm, 45 ACP and 40 S&W race guns. It’s just the perfect burning speed to feed the compensators with a higher volume of gas. With AUTOCOMP competitors get off faster shots with minimal muzzle flash, it’s a winner.
One of the most popular reload propellants, 231 is a pistol powder ideally suited to the 38 special, 45 Auto, and 9mm standard loads. Consistency, clean burning, low flash, and a broad range of applications make this powder a choice for any pistol cartridge reloader.
This propellant was developed for Winchester factory-loaded ammunition for 357 Magnum, 444 Magnum, and 410 Bore. Its high loading density provides optimal velocity. 296 is recommended by Winchester for 410 Bore AA loads.