Temperature stability of CFE223

[myrifle]

Okay, the Lord smiled, the planets aligned and a blind hog found an acorn!
What does this mean? Work didn't need me after all this weekend and I went to the range!
After all, even a bad day at the range is better than any good day at work...right?
Lessons learned, I need to work on shooting AR's. My bud outshot me with my own rifle.
So, results from my rifle.

123gr Amer. Gunner. COAL: 2.250 Avg Vel: 2473 sd: 6 es: 17 Advertised Velocity 2590

Hrndy Black 123 ELD-M, COAL 2.250 Avg Vel: 2494 no other data due to operator error. Advertised Velocity 2590

Hrndy 123gr SST, COAL: 2.260, 29.0gs CFE223 Avg Vel: 2384 SD: 8 ES: 17
29.3gs CFE223 Avg Vel: 2400 SD: 5 ES: 14
29.6gs CFE223 Avg Vel: 2425 SD: 14 ES: 32
29.9gs CFE223 Avg Vel: 2480 SD: 16 ES: 34
30.2gs CFE223 Avg Vel: 2473 SD: 9 ES: 26
30.5gs CFE223 Avg Vel: 2545 SD: 23 ES: 52
30.8gs CFE223 Avg Vel: 2541 SD: 17 ES: 43

On the reloads, all primers were well rounded with no cratering, had no indication of pressure signs with reloads.
Ironically, the Hornady Black, 123gr ELD-M's showed flattening of the primers and a faint ejector smear on one or two brass.
While I didn't get to Hornady's advertised velocity I was able surpass their velocity in my rifle.

My thought is to load up one or two more groups with CFE223 in the same increments and then maybe try another powder.
What I have? Some Varget, H4350, H4831SC, LT-32.

Of what I have, does anyone have a suggestion?

Thanks to everyone for your help.

Cal

Non of your listed powders other cfe223 is going to work.

If you can find it get some ar-comp or xbr8208. I prefer the ar-comp because it's not as funky over 28 grains as xbr8208.