The 2600 with the Scirocco II is as far as I'll push it. Same load is ~2610 with 210 TTSX. When shooting in 100deg temps, hot chamber, etc, the primers show a tiny bit of flattening (edges aren't quite as round). No sticky bolt or ejector marks though. The 2750 with the 185 TTSX (48.5 TAC) shows no pressure signs whatsoever.