While 4198 works great in the 222, I find it hard to meter thru my powder measure.
I have switched to H322 or BL-C(2) because they meter so nicely. I use 23 grains of either with Sierra 50 TNT bullets and Rem 6 1/2 primers.
Both loads shoot better than I can hold my Sako. 1/2 in to 3/4 in groups all day!