I got four pounds of CFE BLK in to try. It looks like it might be ideal for both the .17 Hornet and .22 K-Hornet, but might be a little slow for the .22 Hornet itself. But dunno until we try!
After too much of trying to turn my Brno K-Hornet into a .221, this week found 13.5 grains of 300-MP gets right around 3150 with 40-grain Tipped Varmageddons, with 10-shot groups going into around 3/4" at 100 yards.