I prefer powders like W231 and Titegroup in the .327federal.
They meter well in the Dillon measure. And they don't break the bank.
I am just starting to play with AA#9 in the 5.5" Blackhawk, but it consumes so much more powder [less rounds per pound]. I generally save my #9 for my .357mag carbines and 8" barrel revolvers. Or longer barrels on my T/C Contender.
So far, I see no benefit in the Blackhawk using #9 [over 231 or titegroup]. I don't push very hard on the 632's even though they are Pro Series, and especially the Taurus M327's........but the SP-101, GP-100, and the Blackhawk eat the hot stuff all day. Hot not really max, but around......100gr XTP Hornady w/10gr+ AA#9 or 5gr W231............
and 115gr lead (Penn) 4.5gr Titegroup and 5.0gr W231
My new target loads for the .327fed are Berry's 83gr plated HBWC, seating at COL 1.333" [not flush] and 3.4gr W231