If TAC and CFE223 are the options I'd go with TAC without a second thought. I wasted some time and money trying CFE223. I've never heard or read of anyone finding top accuracy with it.
Agree. I could not get CFE to shoot accurately in .223. I have a lb of BLC2 I'm going to try. If I can't get it to shoot I will go back to AA2520 and 748.
kwg