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About that temperature sensitivity thing:
CFE 223 is about like the excellent Varget in the range from 32*F to 68*F, but above that range it takes off like a rocket.
This is according to what is found here:

https://www.wlcastleman.com/index.html

Yep, lots of neat photography, but scroll down to find this from Mr. William Castleman:

https://www.wlcastleman.com/equip/shoot/index.html

That is a neat set of articles, containing some neat graphs and tables, a sample:











Shows how good H4895 is too, over the entire range of temps tested.
H4895 can be used to do 60% LR loose loads or 110% LR compressed loads after use of a drop tube.
But the ball powders sure do meter well and don't require any effort to seat the bullet over them.

IMR-8208 XBR is remarkably stable and has "super short grains" of extruded that meter very well,
and at #117 is very close to AA-2230 (#115) and AA-2460(#116) on the relative burn rate scale.

How about the Alliant AR-Comp and IMR-4166 stick powders ??? with velocities decreasing as temperature goes up
in some of those graphs, etc., ???
Lots to ponder there.