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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
375/408 Banded Solids Test
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<blockquote data-quote="MontanaRifleman" data-source="post: 901441" data-attributes="member: 11717"><p>Maybe you are including the bore rider in front of the seal tite and driving band? CE bullets actually have very short bearing surfaces, if you do not include the bore rider. This does vary from bullet to bullet depending on where the seal tite band is placed.</p><p></p><p>On the 180 gr .308 C21's, the bearing surface, aft of the rear material displacement grove, is ~ .205. The driving band is ~ .095 if you wanted to include that as bearing surface, and the the seal tite band is another few thou. Call it .350 all added up. Not much bearing surface for a bullet that is 1.492" long.</p></blockquote><p></p>
[QUOTE="MontanaRifleman, post: 901441, member: 11717"] Maybe you are including the bore rider in front of the seal tite and driving band? CE bullets actually have very short bearing surfaces, if you do not include the bore rider. This does vary from bullet to bullet depending on where the seal tite band is placed. On the 180 gr .308 C21's, the bearing surface, aft of the rear material displacement grove, is ~ .205. The driving band is ~ .095 if you wanted to include that as bearing surface, and the the seal tite band is another few thou. Call it .350 all added up. Not much bearing surface for a bullet that is 1.492" long. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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375/408 Banded Solids Test
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