A while back I got tired of looking at a dozen different powders on my bench, some for calibers I don't shoot often. So I checked amongst my common calibers looking for 1 powder and came up with h4895 working for quite a few, including the .223. I put together some max loads which are overflowing often, but kept losing varying amounts as the brass bounced in my press(turret) so consistency wasn't great. So I dropped a grain below max and it loads very well now and shoots well enough to make me happy.
I'm also using it in 25-06, 30-06, 7.62x39 and a few others. I've got all kinds of powder, usually 1 for each caliber that gave the highest max speed that I will likely never use. And I go to the shows, I have to find 1 powder instead of 5.
Simplicity, makes life good.