Most of the time for anything over 55 grain 223's I use H-4895 basicly on Hornady 75 grain A-Max with outstanding resuts sub MOA at 100 yards from a bolt gun.
Recently I started using IMR 8208 XBR for 60 grain V-Max's out of my AR and got great results.
There are a lot of good choices, these are mine.
Jim
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Si vis pacem, para bellum
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