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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet Weight vs. Bearing Surface
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<blockquote data-quote="royinidaho" data-source="post: 450251" data-attributes="member: 2011"><p>The goal is to achieve an Extreme Spread in very low teens or single digits. The lower the better.</p><p></p><p>Bearing surface variations is commonly suspected as the culprit. Vertical stringing at long distances is proportional to velocity spread.</p><p></p><p>However, variations in bc are also a factor. Thus included with bearing surface measurement is meplat trimming. There are those here that say it makes a difference beyond 600 yards. I tend to agree with them.</p><p></p><p>A bit poorer but uniform bc is certainly better than a varying bc from shot to shot.</p></blockquote><p></p>
[QUOTE="royinidaho, post: 450251, member: 2011"] The goal is to achieve an Extreme Spread in very low teens or single digits. The lower the better. Bearing surface variations is commonly suspected as the culprit. Vertical stringing at long distances is proportional to velocity spread. However, variations in bc are also a factor. Thus included with bearing surface measurement is meplat trimming. There are those here that say it makes a difference beyond 600 yards. I tend to agree with them. A bit poorer but uniform bc is certainly better than a varying bc from shot to shot. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Bullet Weight vs. Bearing Surface
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