when I load 3/4 oz 12s with # 9 I get a few leakers. Mostly worn out hulls on the last round. Set them aside,for sealing.
I put a little puddle of white Elmers glue on a piece of plastic . Touch it with a pencil point picks up a tiny dot of glue. Touch the hole it seals it with a very sparse dot. You can control the size of the dot with the size of the pencil point.
William
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