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For a long time, the rifle I carried for hunting Coyotes, out past 400 yds, but not over 500yds, was my trusty Tikka T3 Lite, stainless, chambered for the 6.5x55 swedish mauser cartridge.
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I had a chart taped to the side of the butt, with scope settings, for different bullet weights, out to 500yds.
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The scope responded positively and reliably to adjustments in a manner I trusted it to maintain zero, when set to each of the adjustments indicated on the range table taped to the butt.
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velocities and trajectories are good enough to easily take Coyotes out to the borders of your fields, as long as you do your due diligence, and judge your distances correctly. Even cheap range finders are good for this out to 400yds.
The cross sections of Coyotes depends on their size, anywhere from 4 inches to 9 inches. Add 3-4 inches of hair all around.
At 100- 400 yards, a slight miscalculation can easily create a miss. There isn't a rifle or cartridge I know of that has a laser trajectory, and doesn't require scope adjustment, or "hold over" to accommodate bullet drop and wind drift.
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