It’s not a good idea to reduce a charge by 70%.Some powders will detonate at a greatly reduced load, especially slow burning magnum pistol powders.
1) Please list the slow magnum powders to be found in .45ACP.. . . including two 50rd box's of the seller's .45acp reloads.
2) Despite years of reading on the topic, including Hodgdon's statement Re:H110, I have yet to see a single case of the dreaded detonation that wasn't more easily explained as a double charge. I have experimented with slow powders at reduced to very reduced charges, and my results match Hodgdon's (shocker). . . all I ever got was very incomplete combustion.
I call Nellie (the Loch Ness monster)! Everyone talks about it, but no one seems to have seen one.