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Do you have any H1000 powder from a can yourself? I just got mine out, and your pic looks awful much like a mixture of two powders. If you don't have any, I suggest you get some or find someone you trust who has some, and check it out. I see two different grain diameters and colors in your pic, and my H1000 is only greenish and fairly large diameter, no silverish and smaller diameter.
If this is indeed a mix, that could be your problem.
Here is the pic of mine...
Here is a better pic of one of the rounds. I tried to find some H1000 last night but everyone here is out.