I've loaded quite a bit of .41 Mag, but my bullet is the Lyman #410610 (220 grains) so I can't testify to anything on those bullet weights. I agree though, 2400 and AA#9 should be good powders for it. Another one you might try is AA4100, if you can find it. It seems to be the same powder as Ramshot Enforcer but that one seems to be pretty rare also these days. AA4100 has given me outstanding results in .44 Mag shooting the Lyman 429421, and expect it to be outstanding in the .41 also...just haven't gotten around to actually trying it.
If you want to try Titegroup, it may work well but I wouldn't push it too hard. More of a target powder in a magnum revolver load.
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