Mark, If I build a dope sheet 100, 200, 300, 400, 450, 500, 550, 600, 650, 700, 750, and 800; I only have to do it one time. From that point on, I can pick any distance on that sheet and verify the zero on the rifle has not changed. Ballistic software is so good, I can actually put together an accurate dope sheet by shooting at 100, 400, and 700.
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