I used CFE223 and BL-C2 in .22-250 and .223 last season, based on that chart it seems pretty accurate. I also noted that CFE appears to be the same powder compound as the BL, but modified with tin oxide? for copper dispersion. I answered my own questions about these in cold weather, so I have gone back the Extreme variety. In .280 Remington, RL19 and RL22 also exhibited some velocity loss in cold weather, typically near zero* or below.