My local supplier is having a hard time getting supplies in and I am about out of IMR7828 he has 2# of IMR7828ssc though. The bottle says to use the 7828 data,but will it be the same or will I have to develope a new load again? I fear itsthe later.
My experience is its faster. But the old batch I had produced some of the lowest veloicitys out of my STW I ever seen. I didn't see any additional pressure signs, and groups were the same. I say approach with caution. If your load before hand wasn't pushing the envelope, then this shouldn't change. But if was .5gr away from locking up in your chamber or real flat primers, knock her down 2gr and rebuild.
From my experience with H4831 and h4831sc you should be able to use the same load data, it's supposed to be the same burn rate but smaller kernels for denser charges.
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As BC said, it should be the same. But I would test it just aswhen switching from one lot # of powder to another, since variations do occur, even though the powder is "the same".
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Can I interchange IMR 7828 and IMR7828ssc?
