It is the other way around. The Bufalo Bore heavy 30-30 is loaded with the 190gr Hawk bullet, intended to duplicate the orginal 303 Savage bullet.
I use this this bullet in the 303 Savage, 30-30and 300 Savage. I have also tested the bullet/load here
http://www.marlinowners.com/forum/a...m/ammunition-test-results/150046-bullet-tests-focus-30-cal-190-hawk-35-rem.html In testing and actual use, it has proven to be a very soft bullet, ideal for deer. The factory loaded Winchester Power Point is a much better penetrator, for hand loading the 170 Sierra is toughest, sombody is going to mention the 170 Speer Hot Core, but it is also soft. The Buffalo Bore 190gr should be about the last 30-30 load a person should choose for heavy game, but they like to hype it up.
See
.30-30 Winchester (.30 WCF ) for a good write up 30-30 load performance on actual game. Note their informed opinion: From softness to hardness the order is Speer, Remington, Hornady, Hornady being identical to other Hornady .30 cal round nose bullets and the Sierra also being identical in relative hardness to other .30 cal projectiles in the Sierra line. They do not mention Winchester, but it has proven many times to be the best penetrator 30-30 bullet of any I have tested, short of FMJ, and it does this with an adequate wound channel