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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Stability Formula for Aluminum Tipped Bullets (Spreadsheet linked)
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<blockquote data-quote="Michael Courtney" data-source="post: 994977" data-attributes="member: 28191"><p>The only bits of additional info other than that required by standard ballistics calculators are the total length of the bullet (measured with a caliper) and the length of the plastic tip, aluminum tip, or cavity in the front of an open tipped match. To measure the depth of an OTM cavity, we use a mechanical pencil for the ones where the graphite will fit. Just adjust the pencil lead (graphite) until it hits bottom and measure the length of the graphite. The "Full Density" length is then the total length minus the length of the pencil lead required to reach bottom (the cavity depth).</p><p></p><p>For narrower OTM openings, we use a narrow drill bit and a sharpie to mark the depth. One might also use a needle or similar rigid narrow object. </p><p></p><p>Don Miller worked hard to create formulas that could be used by the average reloader, and we've tried to maintain that perspective.</p></blockquote><p></p>
[QUOTE="Michael Courtney, post: 994977, member: 28191"] The only bits of additional info other than that required by standard ballistics calculators are the total length of the bullet (measured with a caliper) and the length of the plastic tip, aluminum tip, or cavity in the front of an open tipped match. To measure the depth of an OTM cavity, we use a mechanical pencil for the ones where the graphite will fit. Just adjust the pencil lead (graphite) until it hits bottom and measure the length of the graphite. The "Full Density" length is then the total length minus the length of the pencil lead required to reach bottom (the cavity depth). For narrower OTM openings, we use a narrow drill bit and a sharpie to mark the depth. One might also use a needle or similar rigid narrow object. Don Miller worked hard to create formulas that could be used by the average reloader, and we've tried to maintain that perspective. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Stability Formula for Aluminum Tipped Bullets (Spreadsheet linked)
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