At 67, I’m definitely in the less is more crowd.
I don’t own any magnums anymore and won’t. I just don’t see the need.
I find that I enjoy shooting the mild cartridges a lot and shoot them well because of that......
I now carry a Kimber Hunter in 6.5 CM with a SWFA 3x9 on deck - kind of an odd pairing.
Light rifle, heavy-ish scope. But the pairing works out very well.
I hunt blacktail deer and cascade elk mostly, with an occasional antelope tossed in.
It’s become my “lucky” rifle with several elk and really nice blacktails to its credit.
The milder stuff works just fine, for me......ymmv
Which bullet for elk in your 6.5 Creedmoor?