There would be no end to the things that complete the whole picture. The question here was just how to compare bullets of different wights and caliber. To compare you would need to use the same bullet as well. Like the Nosler partition which has the same shape and construction in all caliber. I am a hunter not a scientist or ballistics engineer. I have however killed big game in the field with probably 20 different calibers. I don't know everything about why things work but I do know what does work and what does not.