I got caught with doing 3 shot groups with a rifle that was shooting erratically. Initally blamed the scope, so changed it and re zeroed. Thought the 2nd shot must have been bad cos 1&3 were spot on.
Still no better, shot a 5 round string and got 2 separate groups. Sought some advice, turned out the bedding was poked. Since then I do 5 as a matter of course.
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