Hodgdon is introducing a new ball powder CFE 223 wich is supposed to reduce copper fouling. Although I can find no mention of it on their website in products or news there is data for it in several calibers .223 for one. It looks like it might be usable in the Grendel. Here is the article: http://bulletin.accurateshooter.com/...opper-fouling/
New Powder from Hodgdon
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