Jeff,
Glad to see another "hopelessly anal" person work the math.
Man, if my geometry, trig, and calc teachers had only said, "Look here Carlin, you can calculate the come up for 600 to 1000 without firing a shot and be in the ball park!" I wold have been a much better student!
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Ni ellegimit carborundum esse!
Yours In Marksmanship
http://www.1bigred.com/distinguished
michael