The main thing I am looking for is incremental increases in velocity, as soon as this diminishes I believe an over pressure situation is occurring, often noticed just before bolt lift comes into play.
Good strategy...... but with the double based propellants I've worked with the velocity doesn't flatten out (diminish at top end); with double based powders like RL22,you add more powder and you continue to get more velocity even in the red line zone.
Meantime you are already over the top and don't know it but velocities are atypical but we think they are OK. You hang out on the ragged edge of pressure and performance.
