It would be slow for elk probably. You are often taking longer shots and the accuracy would also suffer so it's not really a good elk round in open country. .300 is a much better choice or 7mm variations imo.+1 for the .375. More versatile, you can get near .416 power or download for a mild recoil rifle. Seems you will use it more in that configuration. Bigger isn’t necessarily better when you are already using enough gun!
I wonder what velocity you can get the 235 grain pills? That would be a perfect elk caliber.