Earlier here I mentioned my pre-'64 M70 in .338-06AI for elk. Just came across an old pic of the first bull I shot with it after re-barreling from 30-06 back in 1988.
It was a rainy overcast day, wet ground. The bull was well hidden and bedded in a thicket and let me walk past him from about 30 yards on my right. He rose from his bed, snapped a branch that had me spin around, flick off the safety and get a quick shot off. All I could see was his orange rump and antlers laying back as he jumped. The bullet hit him just east of the poop-chute, broke that large hip joint, traveled lengthwise through his body and broke his off shoulder piling him up 20 yards away.
For the elk hunting I do here in OR in thick timber, I just cannot see the need for any more power than what I'm getting from my load with the Nosler 210gr Partition at 2,770 fps.
Since building this rifle, it's downed five bulls, and I cannot see any changes on the horizon. YMMV