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Old February 2, 2013, 01:55 PM   #5
Bart B.
Senior Member
Join Date: February 15, 2009
Posts: 6,318
tank1949, how many shots are you putting in each test group?

If you shoot several groups with the same load and they're not all the same size within a 10% spread, you're not putting enough bullets into each one for them to be at least 90% valid.
US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
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