Since I couldn't find the standard pistol powder I wanted, I had to work up loads from sketchy information. I read lots of forums and guides on how to work up loads and got feedback from experienced shooters on my loads. The reloading forum on this site isn't real busy. I used AMMO & HANDLOADING (Stickies are great there) and 9mm/38 Caliber - Brian Enos's Forums... Maku mozo!.
You can probably find something here that would give you a place to start.
Products - Lapua
Get a chronograph and read up on both chrono and spent brass indications of over pressure. Start low and creep up slowly on the velocity you want. I started so low that some of my initial loads wouldn't even cycle the gun properly.
Remember that the amount of the bullet set in the case is very critical. This has a lot of impact on the peak pressure. So bullet length and OAL are important.