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Superformance powder for 257, has anyone tried it?

Superformance powder for 257, has anyone tried it?
« on: January 19, 2018, 08:45:26 AM »
Curious if it will work for the 257 bee.

.257

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Re: Superformance powder for 257, has anyone tried it?
« Reply #1 on: January 19, 2018, 02:27:41 PM »
Yes with 115 Berger's.
Great groups but the  velocity spread was over 150 fps.
Mike