I load for two brothers and one likes the 130TTSX and the other likes the 140TSX. They both have killed elk with their respected 270 load. Splitting hairs really. I think which ever you can have the best group with is the one I would lean towards.
Like everyone else said whichever shoots best as long as it is a well constructed bullet. My brother personall shoots 130's out of his and has put a lot of elk to sleep with it. O'Connor who is well known for his love for the .270 used the old 130gr. winchester silvertip (not balistic tip) ammo on many an elk hunt. The 130's shoot as flat as a frozen rope if you are a MPBR guy rather than a balistic plex or turret spinner.
whether 150 or 130 get a good bullet, tsx (any variety), accubond, partition, a-frame, etc
There is one tip I have learned over the years in hunting whitetails in late season snow. Do not overlook soybeans left standing on the edges of fence rows, woods, creeks, buildings wherever it might be, this is where the deer will be while the food lasts during late season. December/January will pull deer in from some distance away to feed on the easy to get to food.
I killed one of my nicest bucks off of a very small patch of soybeans that was left after rains created a...