You could load even less. Just a tiny bit, providing a single hit so small you'd only know it by effect, rather than actually feeling the hit on your throat or lungs. That's one of the pluses of this vape IMO. Whether or not doing such a small amount is worthwhile would be up to the individual user. I've found that loading smaller amounts (not the tiny bit I mentioned) makes it easier to conserve. Load a big trench, and leave the battery connected a little too long, and it can go through the weed pretty quick, especially if it's really fine ground.I say you could get away with 0.025g