There are so many good powders for the 223/5.56mm round it's scary.
Like said above, WC844, WC846, CFE223, H335, BL-C(2), 4985, Varget, AA2230, AA2495, IMR 8208 XBR, Benchmark, W748, X-Terminator, TAC and probably a few I missed, all will work and work fairly well.
For semi-auto .223 ammo I like WC844, CFE223 and H335 best. For bolt action ammo I use almost noting other than Varget.