need some help with 30stw

In my .30-8mm, which is the same thing, I load 76grs of R22 with a 210gr Matrix VLD or a Berger but the Matrix is more accurate. Mine has a 27 1/2" barrel and it does 3090fps with that load.
you can use .300 Ackley data as a starting point. Or you can use .300 Jarrette, or .308 Baer (the small case). All are similar to a .300 WBY mag
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