For the lighter bullets in 223's I've always liked Benchmark. It flows light water through a powder measurer and it's pretty temp stable. Also, I kinda went overboard on the stuff a few years ago and I seem to have ended up with a whole shelf of it.
I don't imagine you're going to find any load for a 223 using H1000 and considering it's one of those powders in very high demand I wouldn't waste any of it trying to develop a load with it.
There's a ton of different powders that work very well for those bullet weights in a 223. TAC, H335, H332, Win748, 8208, Benchmark, RL10, N133, N135 and that's just a few I can think of off the top of my head the list of what'll work well is extensive.