I've always said, It is harder to find a powder that doesn't work well in a 223, than it is to find one that is 'better than all the rest'.... every powder you have will work well in a 223....
some will say H 414 is too slow.. but at the same time, I don't think you'd be disappointed with the accuracy it will turn in..
223s and powder are like Gas and VW Bugs... they'll pretty much run on anything..
"........and I ain't asked any pardon, for anything I done!"
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." —Theodore Roosevelt"
"why do I carry a 45? Because they didn't make a 46.."