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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Componants are finally all here!!!
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<blockquote data-quote="Fiftydriver" data-source="post: 103812" data-attributes="member: 10"><p>The way I figure taper is to take the base diameter, actually the diameter at the bolt face if your looking at a chambering reamer print, take this base diameter and subtract from that the shoulder diameter.</p><p></p><p>This will give you a certain value, say "X".</p><p></p><p>Then take "X" and devide it by the length from the bolt face to the body/shoulder junction. This give you the taper per inch of case body length.</p><p></p><p>For example, here is my 338 AM dimensions:</p><p></p><p>Base/Bolt face diameter...0.6381"</p><p>Shoulder Diameter.........0.6180"</p><p></p><p>Difference................0.0201"</p><p></p><p>Case body length..........2.5792"</p><p></p><p>Total taper(0.0201") divided by case body length(2.5792") equals 0.0078" or 7.8 thou of taper per inch of case body.</p><p></p><p>I would agree with BD408 the difference in taper between his 338 ST and my 338 AM is meaningless as far as performance potential is concerned. </p><p></p><p>Good Shooting!!</p><p></p><p>Kirby Allen (50)</p></blockquote><p></p>
[QUOTE="Fiftydriver, post: 103812, member: 10"] The way I figure taper is to take the base diameter, actually the diameter at the bolt face if your looking at a chambering reamer print, take this base diameter and subtract from that the shoulder diameter. This will give you a certain value, say "X". Then take "X" and devide it by the length from the bolt face to the body/shoulder junction. This give you the taper per inch of case body length. For example, here is my 338 AM dimensions: Base/Bolt face diameter...0.6381" Shoulder Diameter.........0.6180" Difference................0.0201" Case body length..........2.5792" Total taper(0.0201") divided by case body length(2.5792") equals 0.0078" or 7.8 thou of taper per inch of case body. I would agree with BD408 the difference in taper between his 338 ST and my 338 AM is meaningless as far as performance potential is concerned. Good Shooting!! Kirby Allen (50) [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Componants are finally all here!!!
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