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Rifles, Reloading, Optics, Equipment
Reloading
7mm load development
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<blockquote data-quote="jebel" data-source="post: 1524269" data-attributes="member: 106189"><p>Just some possibilities to consider.</p><p></p><p>1) You might not be stabilizing that bullet, depending on the twist rate of your barrel and the elevation where you're shooting. Assuming a twist of 9.25 (my rifle), sea level, and velocity of 3,100 fps, I calculate a gyroscopic factor of 1.416 (i.e., less than 1.5).</p><p></p><p>2) Was your barrel excessively hot as you progressed through the test? Depends how quickly you fired and how heavy your barrel. One of mine can only go about 10 rounds before it needs a full cool-down, or groups are affected.</p><p></p><p>3) Does your scope have an adjustable parallax (and was it properly adjusted to 200 yards)? I'm reaching here.</p></blockquote><p></p>
[QUOTE="jebel, post: 1524269, member: 106189"] Just some possibilities to consider. 1) You might not be stabilizing that bullet, depending on the twist rate of your barrel and the elevation where you're shooting. Assuming a twist of 9.25 (my rifle), sea level, and velocity of 3,100 fps, I calculate a gyroscopic factor of 1.416 (i.e., less than 1.5). 2) Was your barrel excessively hot as you progressed through the test? Depends how quickly you fired and how heavy your barrel. One of mine can only go about 10 rounds before it needs a full cool-down, or groups are affected. 3) Does your scope have an adjustable parallax (and was it properly adjusted to 200 yards)? I'm reaching here. [/QUOTE]
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7mm load development
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