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Thanks for posting.  What book is that from?

I’ve always read about the duplex and triplex loads, but never saw the data for them.

2 gn Unique, 25 gn 2400, 3 gn Bullseye for the 230gn @ 2000fps.

I can see starting off with a fast burning powder to act as a bigger primer, but I thought it would be followed by a larger charge of a slower than normal powder.  Then 3 gn of Bullseye on top of it all?  Is that to clean up any unburnt granules of powder?

I wonder how much difference you would get by just mixing all 3 of the powders together and dumping in the case?

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