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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.338 M.O.A.G. (mother of all guns) pics and story
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<blockquote data-quote="goodgrouper" data-source="post: 65498" data-attributes="member: 2852"><p>[ QUOTE ]</p><p> tell me what the difference is between base to ogive and bearing surface is when you subtract the boat tail portion of the bullet. I mean, I can see that finding the exact tangent spot where the cylindrical portion meets the ogive might be a challenge and would require special gear to get it down to the .001". </p><p></p><p>[/ QUOTE ] </p><p></p><p></p><p>That is in effect what this tool does. It will measure from the back of the bearing surface to the front. One can measure base to ogive with a S.P. tool, but there is another measurement in the middle-where the boat tail meets the shank or bearing surface. There is often huge variation in this area.</p></blockquote><p></p>
[QUOTE="goodgrouper, post: 65498, member: 2852"] [ QUOTE ] tell me what the difference is between base to ogive and bearing surface is when you subtract the boat tail portion of the bullet. I mean, I can see that finding the exact tangent spot where the cylindrical portion meets the ogive might be a challenge and would require special gear to get it down to the .001". [/ QUOTE ] That is in effect what this tool does. It will measure from the back of the bearing surface to the front. One can measure base to ogive with a S.P. tool, but there is another measurement in the middle-where the boat tail meets the shank or bearing surface. There is often huge variation in this area. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
.338 M.O.A.G. (mother of all guns) pics and story
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