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Rifles, Reloading, Optics, Equipment
Gunsmithing
Barrel Bore Curvature
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<blockquote data-quote="Coyboy" data-source="post: 609670" data-attributes="member: 3733"><p>Take the amount of "ramp" in the barrel per foot times the distance to target in feet would equal the error from theoretical straight line. assuming the barrel has a one direction curve indexed up. So from centerline of barrel if it curves up .010" we could calculate a 3" point of impact error from what a perfectly straight barrel would produce, Theoretically. </p><p></p><p>Depending on weather the bore was indicated in one of two styles;</p><p>Straight in the first 3" of breach and let the muzzle run out wildly with the curve,</p><p></p><p>Or indicate in the throat and muzzle dead nuts, this would lesson the effect by half, theoretically.</p></blockquote><p></p>
[QUOTE="Coyboy, post: 609670, member: 3733"] Take the amount of "ramp" in the barrel per foot times the distance to target in feet would equal the error from theoretical straight line. assuming the barrel has a one direction curve indexed up. So from centerline of barrel if it curves up .010" we could calculate a 3" point of impact error from what a perfectly straight barrel would produce, Theoretically. Depending on weather the bore was indicated in one of two styles; Straight in the first 3" of breach and let the muzzle run out wildly with the curve, Or indicate in the throat and muzzle dead nuts, this would lesson the effect by half, theoretically. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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Barrel Bore Curvature
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