Found this write up, way back and tried, it worked well.
As for the heavier projectiles H4895 works well for projectiles up to around 77gr but when you go over that use varget, Varget is the best powder for projectiles heavier than 69gr bar none, also a trick with heavy projectiles in a 223 use Remington 7 1/2 primers they burn hotter and help with case fuls of slower powders like Varget.
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