I was in a Quebec caribou camp with Layne Simpson several years ago and he was STILL seriously pissed about a misfire on a truly wonderful whitetail the year before.
If I remember correctly, somebody (maybe Remington or Norma) made .308 brass with a small primer pocket and he was getting stellar accuracy with the brass.
THEN, he was hunting whitetail deer one very cold morning and he experienced the worst thing possible for a handloader ... a total misfire ... CLICK!!!
And, of course, the buck ran away, never again to be seen by human eyes.
At a later date, Layne froze some ammo and experienced the same thing at the rifle range. Something about small primers, relatively large cases, freezing temps and dammit misfires.
Frankly, Layne is a very decent handloader, truly an astute hunter and I suspect he was onto something.
Because of this, I would not personally trust a small primer to ignite a 6.5 Creed in a hunting load ... period.
Just my thoughts and thoughts not requested by a living soul.
kd
Interesting Would love to know more specifics on this scenario. Powder used and what primer interest me most.
Expect I will be trying this Lapua 6.5 Creedmoor brass combined with H4350 & CCI 450 primers before long. I will look into testing frozen ammo as well to satisfy curiosity if nothing else.