Gunner500,
I never shot any of those little ABW bullets that you guys are discussing, but I can tell you that the 450 grain .458 FMJ Kodiaks at 2150 fps shoot through Cape buff and Bison easily and one even dropped an ele with a frontal brain shot from my 1886 .45-90. They are hammers!
However, the NFFPS and Punch are better for frontal brain shots as they shoot through the ele head and on into the body - have to be cut out.

Great bullets do make a difference.

CRS, NRA Benefactor Life Member, Whittington Center, TSRA, DWWC, DRSS
Android Reloading Ballistics App at http://www.xplat.net/