Nope, I was just pointed that same thing out and I think you are right. I think what they are saying is, take a powder measure and set it at 100 grains. Pour in Goex and it will weight 100 grains. Pour in Pyrodex on the other hand and it will weigh 80 grains. So the chart does make sense that way. You would get more shots per pound of Pyrodex then a pound of Goex.

Although I am surprised that in a manual put out by CVA they would get into weights of powder since everyone usually says, use a volume measure when you work your charge up. Do not concern yourself with the weight of powders.