I'm running the 60 TMK now in my 9T 223 AI AR to std. magazine length and it's killing coyotes pretty good at a starting vel. of 3380. Always thought a 60 grainer designed like an oversized 53 V-Max would be just what we needed. So far it's working great for me, although it's gonna have to be just about perfect to beat my 69 TMK load.