8 grs. Unique with a 250-ish grain SWC has always been a pleasant, effective all-purpose load for me. I shoot a lot of these in my 4" 29-2. Go to 8.5 grs. for a bit more zip if you like. I like AA-9 for full power loads these days, of course old standby 2400 is as good as it ever was, and I still use it, too. I have no direct experience with a 3" .44 mag but lots with 4" S&Ws and 4 5/8" Rugers.
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