I found it when looking for a replacement for my beloved ETR-7, no longer available after Expansion Industries went tits up, lied and attempted to defraud me. MAXAM CSB-1 is supposed to be the same thing but it is less available and less cost-effective if and when you can find it. I went questing for a new powder (
see this thread) and Prima V is what I settled on.
I bought a jug of SV for testing, it's too fast for my needs. For 9mm I think it is on the edge of overpressure yet not quite making 125 power factor - not a place I like to be.
It might be worth testing with PCC though, a bud has been using CSB-6 (faster) powder and getting good results. Or maybe with really light bullets, but again, not what I'm looking for.
For 9mm Prima V seems to be a winner on availability and price (note 1.1 lb or 1/2 Kilo jugs). It burns clean (completely unlike a comparable powder, TiteGroup). It is a relatively fast burning powder, and this is what I want.
I had concerns about metering and settling, but more recently I have been shaking up the jugs before pouring into my powder measure and this seems to help quite a bit. If you don't do this then the granules settle in layers and metering can change quite a bit as (I think) it settles or you work through the layers.
The smaller granules leaks out of primer flash holes if you miss a primer somehow, sort-of annoying relative to large flake powder. Then again, the more dense granules don't fly out of cases during the reloading process as easily.
Powder Valley has it for $14.95 but you get hit with hazmat and I assume shipping which isn't such a good deal.
Grafs has it for $16.99/1.1 lb; put 10 jugs in your cart and you can get free shipping and no hazmat fee! That works out to $15.36/lb delivered, or about $0.008/round. Works for me!!!