So the heavier BB gets a bigger kick in the pants, because it allows the pressure that's built up behind it to be usable, and maximize efficiency. Where the lighter BB doesn't use the pressure build up behind it efficiently, and there is pressure loss through leaks in the mechanism before it can be used by the projectile. That all makes sense to me.
I am visualizing a water hose with water flowing out. You put your thumb over the end for just a second, and then release it and there is an increase in the flow from built up pressure. If you hold your thumb there again,but for longer this time, the pressure build up is greater, so when you release the flow again, the water will travel farther and faster.
Last edited by Schlyder; November 4th, 2008 at 05:30..