Anyone know if the CFE 223 is temperature insensitive like the Hodgdon Extreme powders?

I'm interested in trying it in the new 6x45 upper, but I always try to stick solely with the extreme powders because I hunt and shoot between 40 below zero and 80 above, and have had some bad experiences and wild velocity deviation with powders like BLC-2 and other non-extremes.
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Regards,
Chris

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