Testing BTO, with a standard charge I managed to shoot two 3 rnd groups that will hide under a dime, and both groups I held my breath too long on last rnd.
Its a beautiful day here in Independence, and these Berger 140's may make me look good on paper from here out, next the powder will be increased until maximum velocity within safe pressure is proven....
Powder is H4831sc by the way.
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Keep your Axe sharp and your powder dry.
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