Quote:
Originally Posted by Hapworth
I'm guessing it comes down to the burn rate of the powder. The Speer Short Barrel powder is optimized for faster burn. I'd like to know more, too...
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Advertising hype. There may be reasons to use faster burning powders in short barrels, like reduced muzzle flash, but achieving higher velocities is not one of them.
It's been proven time and time again that the powder that shows the highest velocity in long barrels will also show the highest velocity in short barrels. If you want fun, shoot a load of WW296 in a 2.5" M19. You get both decent velocity and a muzzle flash that will catch your eyebrows on fire.