Comerade,

I have put a couple of Barnes X bullets weighing 130 grains through both shoulders of a bull elk. Both bullets exited. I have complete confidence in the 270 for elk with monolithic bullets.

Over the last few years,I have been using the 120 grain Hornady GMX in a 6.5 Creedmoor for deer and hogs. The recoil is about like a 243.
I think that would be my choice as a low recoil elk rifle.

If the Creedmoor with light bullets kicked a little too much,I would go down to a 243 without hesitation. I have seen one failure on game with a 243 but it involved a cup and core bullet hitting bone at close range. A 243 with partitions or monolithics will get the job done in my opinion.