We're getting way off track here... All I suggested is that if you are going to compare two rifle calibers as close as the 06 and 280 are, why not use the same bullet and same weight as to give a better comparison. As well, zero them at the same range for heaven sakes... There are plenty of quality bullets out there that have a 7mm and a 30 caliber bullet from 150 to 180 grains to pick from.
That may compare the trajectory of the bullets, but not the rifles "killing" ability. I do agree that with the tables presented.....you should be comparing equal bullet wts.
I think equal BC/SC of a bullet would be a better comparison, as you get a bullet better suited for the caliber in question.
Whenever I have researched a new rifle, the weight of the bullet was only used to compute the energy and trajectory at range for different calibers/cartridges. Using different weights of bullets to compute different energies and trajectories to compare is very helpful, and having the BC of those bullets helps to give you the best energy at range.
Along with those, equations that take in bullet weight and bullet diameter will give an idea of overall effectiveness such as Taylor KO value.
Energy only goes so far... high energy super fast light bullets hate penetration because they don't maintain momentum and expand energy into an animal too fast. This is where a bullet with higher SD and equal BC (higher weight and diameter) at the same energy will do better for penetration on game.
