I use Staball 6.5 in .22-250 with 75 ELDM's, 6.5 CM with 123, 130, & 140 ELDM's with outstanding results.
I use Staball HD in 6.5-06 & 6.5 PRC with 140 Barnes Match Burners & 140 ELDM's with outstanding results.
By "outstanding" means 5 in same hole. Temps ranged from mid 30's to low 90's.
I use CCI 34 primers except for the 6.5 CM I use Rem 7 1/2 primers (SRP).
Case fill is 94-97% full for all loads. Primers are on hot side. The CCI 34, mil spec, is intended for 7.62X51 (.308) loads that are commonly loaded with ball powders and are intended for wide temp ranges. The little Rem 7 1/2 approaches the Fed 210 for blast pressures.
No extruded powders are made in USA. The Winchester Staball powders are less expensive & easier to buy than many extruded powders.
My experience with temperature sensitivity was not so good with H414 loads in .22-.250 with the olde Hornady 75 Amax bullets. The load was carefully worked up at 60 deg temps but on a 95 degree rodent shoot I had sticky bolt lifts & cratered primers. A .20 P loaded with IMR 8208 saved the day.