I would pay more attention to the crimp depth. Yours look too deep. Here is what Hodgdon says about the impact of crimp depth on pressure:The petal folds.
Wow, what do you know. A direct relationship between pressure and velocity !Crimp Depth Velocity Chamber Pressure
0.030″ (too loose) 1,308 fps 9,300 psi
0.050″ (normal reload crimp) 1,329 fps 10,500 psi
0.070″ (too tight) 1,351 fps 11,900 psi
0.090″ (very tight crimp) 1,363 fps 13,100 psi