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trying to accumulate an average of what y'all have found to be your bore size measurements for the 30-30...I have been given a bunch of the Speer 123gr .310" dia softpt bullets and i have 1 older well worn 30WCF that I plan to work up some light plinker and close range varmint loads with them...anybody else done something similiar??..if so what kind of accuracy did you manage to wring out of them