Tac was not quite as accurate in my rifle (so far) but still good, cfe 223 was a little better, had a hogh node that was pretty good. The absolute most accurate load I found was ar comp, it was a slightly lower velocity node, but the best groups were smaller than I expected an AR (and myself) to be capable of.I got to ask about TAC! for the Grendel, not to hijack the thread, but I run an 18'' 1&8 with 123gn pills and a 24'' 1&8, using 27.2gn of ARCOMP the 18'' runs 2495fps and my 24'' runs 2575fps same load, my question is does TAC outperform ARCOMP? these loads are very accurate!