I don't trust any of the pressure numbers produced by QL combination very much. Have compared them to actual pressure-barrel results too many times!

Have found QL reasonabkly fun to play with IF you plug in a reasonable velocity. Pressure will then often also be reasonable, but the powder charge can be all over the place.

“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck