I'm not sure what ballistic chart you're looking at, but, it looks to me like the .30 RAR is vastly superior to the .30-30 at all ranges.

The 125 gr. PSP seems to be about midway in performance between Remington's 130 gr. .270 and 117 gr. .257 Roberts loads. Closer, actually to the .270 than the Bob. That being the case, it ought to make one heckuva good deer cartridge.