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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Acceptable Variation in Bullet Base to Ogive and OAL
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<blockquote data-quote="just_jon" data-source="post: 1959127" data-attributes="member: 112153"><p>I received a couple of boxes of my favorite 6.5 bullets and found a 0.017" variance in bullet base to ogive measurement. Bullet maker lists .665. Average of 20 bullets selected from multiple boxes came to .682. I took these measurements because I've been experiencing a similar variation in CBTO using these bullets. In loading for a seating depth test, I found it necessary to start long and incrementally seat each bullet to obtain desired CBTO with my Hornady match grade seating die. I experienced the same issue during OCW, but attributed to my RCBS seating die, thus the new seating die. Now I'm not so sure the die was the problem. </p><p></p><p>So I ask, how much is too much? I'm happy with performance from this bullet in my creedmoor (2856 fps, ES 8, SD 3 and sub 1/2 MOA) and don't want to blow things up by changing bullets. Also don't want to have to adjust seating stem for each round. Appreciate your input.</p></blockquote><p></p>
[QUOTE="just_jon, post: 1959127, member: 112153"] I received a couple of boxes of my favorite 6.5 bullets and found a 0.017" variance in bullet base to ogive measurement. Bullet maker lists .665. Average of 20 bullets selected from multiple boxes came to .682. I took these measurements because I've been experiencing a similar variation in CBTO using these bullets. In loading for a seating depth test, I found it necessary to start long and incrementally seat each bullet to obtain desired CBTO with my Hornady match grade seating die. I experienced the same issue during OCW, but attributed to my RCBS seating die, thus the new seating die. Now I'm not so sure the die was the problem. So I ask, how much is too much? I'm happy with performance from this bullet in my creedmoor (2856 fps, ES 8, SD 3 and sub 1/2 MOA) and don't want to blow things up by changing bullets. Also don't want to have to adjust seating stem for each round. Appreciate your input. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Acceptable Variation in Bullet Base to Ogive and OAL
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