I have used W231 powder for 9 mm. I found it to be a little dirty on the burn. I did also find out going 0.1 or 0.2 grains higher helped to get it to burn cleaner. I stay away from a max load by at least 0.1 grains with any powder. If I think I need more than that I switch powders.
I'm using AA powders for 9 mm presently. I just like the results better. VV powders are great but I don't like the cost of them.
I have read a lot of Lost Sheep's posts. I agree with a lot of what he says. I have found a few things he has written about worked better then what I had been doing as well. I think the only places I might disagree with him is about personal opinion in presses. I just like progressive presses a lot more then slower presses. Normally a different press won't change the finished product beyond the time it takes to get there. Once exception might be extreme accuracy loading.
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