Changing hulls can also change pressures. Using the same load pressures will be less in a paper hull or plastic one with paper base wad & highest in a compression formed case. The .444 or Mag Tech brass hulls have thinner walls, thus more internal capacity than the RMS brass so see should produce lower pressures & they're Drastically cheaper.

Miller/TN
I Didn't Say Everything I Said, Yogi Berra