Light .44M loads with VV-N320 ?

[Zak Smith]

My normal plinking and target load for the 629 is a 180 hard-cast lead bullet with 7.5gr of Unique. This gives 975-1000fps out of the 6" barrel.

I'd like to switch to VV-N320 because it burns cleaner.

Has anyone tried this? I'd like a good starting point for such a reduced load.

thanks
Zak