Deer: 140 Nosler Ballistic Tip, 140 Sierra BT, 140 Hornady Interlock
Elk: 130 Swift Scirocco, 140 TBBC, 140 Nosler Accubond
Having used the .270 for years, these choices mirror my own. For deer lately I have been using 140gr SST's and took the 140 TBBC on my Elk hunt. If you look at the numbers on paper, the 140 is the best weight all around, but there isn't a deer walking this Earth that can tell the difference ! Find what your rifle likes the best and stick with that load.