No doubt the TMKs are an impressive bullet. I have used the 168 and 175 TMK in 308 and the 130 TMK in 260 and the only issue I had with them was they are slightly more jump sensitive that the SMK, but only slightly.. All perform exceptionally but are noticeably more expensive than the Matchking. These new Matchkings are also available, and the .008 difference in b.c. is well ... actually insignificant. At 800yd, Strelok calculates a 0.1mil difference in elevation and 0.0 windage at 5mph. At 100, elevation goes to 0.2 and still no windage difference. Sounds like the 1gr difference in weight is the only attributable difference. That bears experimentation at some point, but at $0.06 per bullet ... there would have to be some significant difference.
Again, excellent bullets, but I find they are, like the TMKs, more jump sensitive. When running the same ammo between my 20" Proof barreled Mega gasser and my 22" Tooley/Bartlein AIAX, that is important.