Cayugad,

I don't have my journal with me as I write, but I have found a significant difference between Pyro P and Blackpowder when used with light weight projectiles like PRB and Ballets.

I compare powders not strictly on muzzle velocity, rather on muzzle energy on a volume basis. For PRB and Ballet, I would a agree that Pyro P produces roughly 25% more muzzle energy than does Goex 3f as the table you supplied suggests.