I was breaking down some shot shells and dumped shot in my powder, didn't realize it until I started loading some shells. 25 gr. on first one, 58 gr. on the next one, 69 gr. on the last one. Thought my measure was screwed up so I tore it all apart an put it back. Then threw some more and they were screwed up too. Calibrated the scale with same results again. Finally saw a piece of 8 1/2 shot in the pan. 3 ounces of 8 1/2 shot in a 4# jug sure takes a lot of time to find. Didn't have a screen that would work.