Originally Posted by dglock
Get some loading manuals! Using what you see on an internet forum is not safe unless you can verify the data.
Definitely get some load manuals. Stay away from fast burning powders in the .40 S&W, especially TiteGroup. Just getting started, you're much better off with a powder in the medium burn rate range. The .40 S&W's pressure characteristics cause powders to burn even faster than they're rated.
Looking at a number of different reloading articles over the years, the one powder that consistently proves most accurate in .40 S&W is Ramshot True Blue. That held up in my own handloads. It is a medium speed powder with excellent pressure stability. The powder charge will be high enough that if someone accidentally double-charged a case, the powder would overflow. That is not a substitute for inspecting the powder charge in each and every case but it does help as a safety precaution. That combined with its accuracy potential makes True Blue an excellent choice particulary for new reloaders. The next 2 on my list for general loading are also medium burn rate powders that cover the .40's load range pretty well also, Ramshot Silhouette and Winchester WSF.
One of the better deals if you can find them may be the NOSLER 250 ct. Bulk packs. I've used the 150 gr. version with True Blue and accuracy was outstanding from the CZ-75B I had at the time.
Another thing that will help is the load data at Ramshot
and it is pressure tested data that covers different bullet types probably better than anyone. You can download the data onto your computer, but also request a printed copy while you're there. It contains a mini load manual with good reloading tips that are not in the online data. As far as a good manual, there are few better than Lyman's.