My friend Jeff, the fluids guy says his formula with the cross sectional area compensation is flawed and a no go.

Without getting exotic he thinks the formula of
energy x momentum appears good for noting the comparible effects of bullet forces on uniform tissues.

Interesting that a 375 H&H with a 300 gr pill has an index of
13,862 and a 470 NE 500gr @ 2150 has an index of 24,491!!!

The 458WM 500 gr @2050 has an index of 21,230 while the
500 NE with a 570gr @ 2250 has an index of 36480!! At 2150 fps it still has an index of 31829!!

All these calculations are great fun but one still must shoot the animal properly in the heart lung region or head(non CNS hit) with the bullets staying in the animal for it to have any merit. Past experience with Elephant shooting other than CNS shots should apply.

Does this method effectively compare the "stopping power"
of non CNS shots??

You decide!!