The BC on 6.5 bullets is astounding... regardless of chambering, 6.5 bullets and the right twist barrel can do amazing LR things.
HOWEVER, a .270 with right twist barrel can do better...
So can .308 bullets with the right chambering and barrel twist...
AND .338, 375, 510s and even .224s
I don't hate Creedmoor because it sucks... I hate it because it takes no knowledge and no skill to shoot it well (i.e. any monkey can go to Walmart and buy a Savage 110, the best scope and rings (that Walmart sells... install said scope and rings with a Walmart screwdriver) and couple boxes of BS grade ammo... and shoot very well.
If you EARN skill... I respect it... if you follow what the web tells you to do like a sheep... I do NOT.
Don't care for my opinion? Glad to hear it... Seriously.
-------------------------------
I will share this final thought... "Learn to love medium and big bore stuff NOW (...don't lose 10-20 years figuring out that .358 Winchester, 9,3x62 Mauser, .45-70, .375 Raptor etc. are REALLY REALLY fun... and accurate stuff).
https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/9648363/1https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/13282682https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/13635736/1Etc.
BTW... great page for reference if you ever take up wildcatting...
https://stevespages.com/page8d.htm