Both these loads were measured by volume. They both are 100g volume. Instead of using a traditional black powder volume measuring device, i used a powder drop to measure the volume of the powder. I did neglect to write that Blackhorn is the only black powder sub, that i would measure using this measuring device.

What i did in my post was share the information i learned about different lots of Blackhorn powder having different densities. It has been pursued no further. Thinking back, i realize i have never run a load of 100g through a chronograph, ever. It does seem to me that the more dense powder would have more energy, and therefore provide more velocity.