How much H335 behind 123 gr SST?

[Harpoon1]

………..The much higher loads shown on the Hodgdon manual were, I expected, for bolt guns. I’ve reloaded for and shot bolt guns for decades, and can spot pressure signs, but the Grendel pressure signs might escape me…………

All of the Hodgdon Grendel data is for gas guns, AR’s! The tip-off is the max PSI generated in the data, no loads are over 52,O00 PSI!