Single base... BUT.. they do list the 357 max and 41 Rem Mag...
http://www.grafs.com/uploads/technic...df-file/20.pdf
Reloading data, web-based http://www.vectan.fr/UK/reloading-charges
VECTAN powders cover all the applications of pistol and rifle reloading and are proposed in four different ranges :
VECTAN Ba10, Ba9 1/2, Ba9, Ba7 1/2, Ba6 1/2 [these all look to be short grains]
Powders single base in stick. This range is now completed with Ba9 1/2, Ba7 1/2 and Ba6 1/2. This range is particularly adapted for handgun reloading. All the powders of this range are absolutely clean burning and now have the same dimensions.
Ba9 1/2 : this new powder between our traditional Ba10 and Ba9 covers a wide range of calibers and is perfectly adapted to the 9 x 19mm, .38 Super Auto, .38 Special, .357 Mag., .40S&W, .44S&W Special, .44 Remington Magnum, .45ACP, .45 Colt
Ba7 1/2 : created to extend reloading possibilities. It gives excellent results for 9mm Luger, 10mm Auto, and .45ACP
Ba6 1/2 : it is the slowest powder of this range. It was specially designed for Magnum handguns ; it is also perfectly adapted to reload small rifle calibers such as .22 HORNET and .30 calibers.
VECTAN Tubal 3000, 5000, 7000, 8000 [longer grains]
Tubular, single base powders, listed here above by decreasing burning rate order from the fastest to the slowest. Vectan Tubal powders are designed for rifles.
Flake powders are flat squares / diamonds
VECTAN A24, AS, A1, A0
Single base flake powders with color identification, intended for handgun use and some rifle applications.
VECTAN 206 SV, 206 V, D20
Single base disc green powders, intended for shotshell applications.
VECTAN Prima SV, Prima V, GM3
Single base granulated powders, intended for shotshell applications.