50 gr Hornady SPSX over 20.5gr of 4198.
You will see this load pop up over and over when inquiring about 222 Remington loads.
I have a book around home somewhere about benchrest shooting, back when the 222 was one of the top picks. This load was a widely used load because it works.
I have tried a multitude of loads on my Tikka 222, and now in my Sako 222 heavy barrel, and no matter how many I have tried, this old load remains the best. One that is very close in grouping and velocity is the max load of CFE223 pushing the same Hornady 50gr SPSX's. Close, but still not quite as good.