this is an extremly hot load, I would not use it in a .223 rifle, I would only try it in a 5.56 chamber, I worked up to this load a 1/10 of a grain at a time starting at 23 grains, and when the primer started showing the smallest signs of over pressure I backed down 1/10'th grain, and this is what I got. I get sub. moa with it at 100 yards. and massive results on varmints, it actually seperates praire dogs and cotton tails in two at 150 yards. use this load at your own risk, please work up to it if not familliar with your rifle or reloading skills, I dont want to feel responsible for hurting someone with my advice, it is as follow's:

rifle s&w m&p15x 16" 1/9 twist barrel, also works well in my sig.556 with the 1/7 twist 16" barrrel. (groups are just not as tight)
primer: cci #41 5.56 primers (white box)
lake city 5.56 brass
powder: 24.5 grains of hodgdon h322
oal: 2.250
bullet: hornady 55 grain v-max