Limited data points, but I did finally get to chrono samples of TAC with a 185 TTSX and 210 Scirocco II

185 TTSX - 2725 (48.5 TAC, BR2 Primer, 338 Fed brass)
210 Scirocco II - 2560 (46 TAC, Fed 215M primer, 308 Lapua brass)
A Federal Fusion went 2635.