Hi Antoetienne
I am not certain about the Tanaka carts, will try in next day or two.
BUT to be honest the tanaka carts are a bit of a pain as, as well as being expensive, they are quite complex and awkward to put together (many parts!), Also they use 5mm caps.
Personally I think the WA Shan carts are a little awkward too:)
A much better option is the MGC P220 carts, but these are now quite hard to get in larger quantities.
The best option as Cerwyn suggests if the KSC 9mm luger cartridge, though some users have found (including me)that you need to remove about 1-1.5mm from the nose of the cart for them to seat correctly in the chamber, also they can be a tiny bit to long to fit in some Wa Shan magazines.
So to summarise:
Although the KSCs run in the M9 wa shan, they are just a bit too long and when seated against the barrel chamber block the firing pin has to travel a long way to set the cart off, causing some misfires, I took about 1.5mm off the nose of 20 here last night and they go like a dream now!! they are now between the length of the P220s and the original M9 Wa shan carts, (p220s are too hard to get, KSCs are easy and cheaper!!)
Hope that helps