Alliant pressure-time curve for 1 1/8 @ 1200fps 12g

Alliant e3 - 17.2 grains = 10,950 psi
Red Dot - 18.3 gr = 10,300 psi
Green Dot - 21 gr = 8900 psi
Unique - 22 grains = 8900 psi
Green Dot and Unique pressure curves are indistinguishable.
See - http://www.shotgunworld.com/bbs/viewtopic.php?f=13&t=405370



Pressure-distance