I was right there with you too Arthur.

So, in other words, a bow that does not waste much energy into its limbs, cams, etc. in order to get them to work but instead transfers more energy into the arrow would then have a lower virtual mass figure and would then be more efficient....right?

As for measuring it indirectly...yeah, what is a "fill percentage"...in layman's terms?

Edited....

Robvos,

Ahhhh!