Quote:
Originally Posted by m21sniper
. Double Tap gets it's tremendous velocities by maintaining a higher average pressure, as opposed to a single massive peak pressure.
The .45 does offer tremendous performance, but you have half as many rounds as a typical "wonder nine", and typically, heavier recoil.
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So the idea is a powder that burns a touch slower. I would guess it is still putting out increasing pressures as the bullet nears the end of the bbl vs. a faster more 'peaky' powder that might be losing pressure before the bullet exits.
In shotgunning (not sure if this would translate to the short bbls in handguns) a slower powder produces more of a shove than a kick.