Have killed, and seen killed, big game from deer to elk with various TSX, TTSX and LRX bullets from 130-180 grains in .30-caliber cartridges from the .308 Winchester to .300 Winchester Magnum. Have yet to see any significant difference in how any of them killed stuff, or penetrated, or grouped at 100 yards, or whatever--and even less difference between the 168 and 180.
But no doubt there HAS to be some difference, at least among those Campfire members who dote on minutiae.
