I took my 30 primers and went to seat them by placing them one at a time in my old round Lee hand priming tool with no cover installed.
Three (10%) went off while seating the primer. I was not terribly surprised as I had more than few accidental squirts when I was supposed to be dripping solution from the small beaker to the big beaker. Here is the warning from the instructions available at MeWe:
If you add two or more drops in the same place at once, this may constitute a concentration which can result in the formation of “lead nitratohypophosphite”, and may result in a premature, “impact sensitive” product, reducing the safety factor of EPH20.
I initially checked my Lead Hypophosphite (a.k.a Lead Hipo) and it did not go bang, but I saw a warning somewhere that it might not go bang yet you may still have a little lead nitratohypophosphite mixed in.
I fired some primed empties and the power level seemed consistent and as expected. All went off first try.
I then assembled more than 100 more, but this time I seated the primers in a case before letting the primers dry. None went off with this process. I dried some primed cases in my PC oven at 120 degf for a couple of hours and test fired a few primed empties. They all went off fine.
I loaded a little over 100 rounds. Mostly 38 Sp, a few 32s.
I will keep playing with my current batch of Lead Hipo (very carefully) until I get more equipment delivered so that I can can make up a better batch.