For some unexplained reason I bought a .223 Howa barreled action from Brownells. 20” heavy barrel, the all important “Tactical Bolt Handle”, and the detachable magazine conversion. Put it in a Boyd’s AT-One stock (which required a little shimming with washers), grabbed some rounds for my old AR and went to the range. Here is a three shot group with 77 TMKs, 24.0 H4895, Wolf primers, magazine length. I was really impressed. I didn’t think the 1:9 twist would stabilize the 77 grainers but it works at 100 yards.