Maybe I didn't state that right,someday's my brain and my fingers don't always agree,I was wondering if it was possible he was running his melt to hot causing excessive oxidation or possibly skimming some of the oxidized Tin off the top before it was incorporated back into the melt.
I generally only need to flux once per pot and only again after adding more metal to the pot. I generally stir it in well and leave it in the pot til it's half empty. Glen Fryxell recommended doing it that way and so far I've cast great bullets doing it that way.
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