I've seen some data in Handloader magazines where they list 45 Colt data in several pressure groups. For example , 14,000, 20,000, & 32,000 pressure loads. You have to consider the gun you have & what your use is. I load for a Ruger Blackhawk & a Judge & load accordingly. Most loads are very modest, just a few with 9.7 grains Unique & some 2400 under a 250 grn bullet. Even those loads are not in the 32,000 catagory, H-110/win-296 & a few others would do that.