Best Powder For 300 Weatherby Magnum

Best Powder For 300 Weatherby Magnum. December 23, 2013, 04:53:17 pm » 7828ssc is a great powder for the 300, you just proved it. Used with good performance with belted magnums like the 300 weatherby magnum.

The 6.5300 Weatherby Lightning in a Bottle from www.gunsamerica.com

December 23, 2013, 04:53:17 pm » 7828ssc is a great powder for the 300, you just proved it. 3/8” groups on day one 3050fps. Loaded up 156 eol bergers.

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