I have been able to squeeze between .8 g and 1 g into a 00 capsule, but that was not with a capsule filling machine, it was with my hands and it was with powdered Peruvian Torch, but that probably weighs a little more by volume than powdered kratom
(and the kratom I buy is micro-fine so I am guessing that if I made them they would weight a lot less than that). \
I have also put homemade kratom extract into caps, which is like little orange - red crystals (kind of similar in appearance to THC crystals) and with those I got about .6 g to .8 g. But once again, that was by hand.
If you are flexible on not buying a filling machine - the way I do it is just taking the large half of the cap in one hand and a little plastic card in the other and just scooping and packing it in until the larger half is full and leveled off, then I put the top half of the cap on and that's that. It goes pretty fast if you don't move like a sloth. I've done 100 grams of extract in about 15 minutes. But that method probably annoys the heck out of other people. I must admit though, the action of filling caps is kind of sentimental to me and reminds me of my days spent "whipping" and filling "beans" if you know what I mean
I have cleaned up my act since then.
If you would like to save your money on the caps and a machine, I have found a way to consume powdered kratom that is much easier (for me at least). I measure out my Bali like this:
-lets assume that 1 teaspoon of Bali is about 3 grams
-we know that 3 teaspoons equal one tablespoon
-therefore, 1 tablespoon is about 9 grams (a decent starter dose for me)
1. I take one tablespoon out of my bag of Bali, (sort of packed in there well, the way one packs brown sugar into a measuring cup) and I level it off
2. dump it into a shot glass
3. I put a couple drops of water in the shotglass and a squirt of honey
4. Mix it all up with a tiny spoon or popsicle stick or whatever you have on hand that will fit in there well (butter knife, your finger, whatever) until it is a thick baby poo/baby food consistency
5. Scoop large dollops of the goo onto your tongue (barely even taste it)
6. Wash it down with some hot tea to get that stuff all ready to be extracted by your tummy. This hits me in about 15 minutes with the Bali, NO LIE.
Hope that helps - because I feel your pain as I HATE toss and wash. Nowhere near as disgusting as tea, but then again I never have looked in the mirror after dumping that tablespoon in my mouth and knowing I probably have teeth that look like I was eating dog sh*t cookies for lunch.