W571 what a Great Powder For 40/45/44 Mag!
Also 3" mag shotgun loads.
I have all data if no-one else has.[I didn't know it was discontinued.]
W540 is also a good one also, as it meters very well too.
If we shooting sportspersons don't hang together... we will all hang separately !
Never knock another's different shooting interest or discipline...REMEMBER we are all but leaves on the same tree of freedom.