Whatever volume you were using for GOEX in a particular cartridge, use the same volume for Schuetzen in the same cartridge. I used elephant until I couldn't get it anymore. I think the factory blew up. I then used Schuetzen but found Diamondback. It was cheaper. Diamondback went away and I tried Grafs which was Schuetzen with a Grafs label. Then Grafs started using GOEX and sticking their label on the bottle. Now they've switched back to Schuetzen, but I've switched to just Schuetzen. GOEX seemed dirtier (MHO), so I'm sticking with the Schuetzen.