I use Varget in my 223 bolt gun because it's more accurate,groups run in the .4's and .5's.69 gr Tipped Matchkings turn 3100 out of the 26" barrel.In my 16" AR I use CFE223 because it's so much better at metering out of a powder measure.CFE turns better velocity,but won't shoot as accurately,and I've found this to be true in half a dozen or so 223's.The low Varget velocities may be coming from a too light bullet not allowing progressive burning.I experienced that in a 35 Whelen a while back.