Interpreting Load Manual Pressure Data?
How do you interpret Max loads with different pressures? For example, Hodgdon data for the 40 S&W with 180gr XTP lists max pressure for all loads around 32-33K except for one. This exception is SR 4756 with a Max load pressure of 28,800psi.
Why such a large difference in Max pressure? Does this mean that this powder can produce similar velocities at lower pressure or does it mean that this bullet/powder combo should be kept lower than normal cuz it has issues like getting squirrely (technical term) when loaded to SAAMI max pressures?