https://rokslide.com/forums/threads/223-for-bear-deer-elk-and-moose.130488/The lighter you go the more limitations you‘re willing to accept. I have a 243 that shot a cow through both lungs and she went a long long way - not a problem in the sage, but would have been hard to find in the timber. I shot a bull facing me with a 338 and he made it a football field away. If that was someone’s only shot, how far would he have gone with a 6.5? I’m jealous of those that can have an elk in the scope and patiently wait for it turn, hopefully slowly, for a double lung shot. When there’s a little hole in and no hole going out, tracking becomes more than a little difficult.
The physics of what it takes to kill elk hasn’t changed in half a century - Jack O Connor waited for broadside shots and killed elk just fine with a 270. Others who want to be able to take tough quartering shots have gravitated to larger calibers for a reason - same reason many shooting the 6.5 will gravitate to larger calibers after a bad experience or two.
My judgement tells me, after hearing the same stories you’ve heard of light calibers killing elk way out there, is that there are plenty of stories not being told of times the shot should have waited for a better angle. That‘s also nothing new - human nature is what it is - many of my friends growing up have lost elk to every caliber and don’t seem to mention it.
As big and heavy as they are, following tracks in the timber with dried up dirt and pine needles of October is one of the hardest things I’ve ever done - rarely does the topic even come up and self teaching the moment it’s needed just doesn’t work all that well - much easier to simply justify it as a clean mis.
https://rokslide.com/forums/threads/6-5-creedmoor-260-for-deer-elk-and-whatever-else.244973/
I would highly recommend you spend some time doing some "light reading" sir. Genuinely, there's a ton you can learn from the above threads. Not to be confrontational by any means, but the only thing "marginal" about smaller cartridges is the bullet selection, and it goes against every major marketing budget in the industry.