The pepper grinder really doesnt work at all in my experience. It would take me at least 15 minutes to get enough chunks of coffee beans to fill the H2JO. The grinder i made here is still adjustable so you can get course grind or really tighten it down and get powder like turkish grind. You can also just screw the grinder directly to a nalgene or hydro flask for cowboy coffee or to use the turk method.
I shortened the spindle, cut extra off bolts, and put a lighter, smaller handle on it. Its down to about 4 ounces by my estimate.
I cant wait to have fresh ground coffee up on the mountain....but since it just snowed 15 inches, i dont have much choice in the matter.