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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Interesting range tests with the 338 Allen Magnum....
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<blockquote data-quote="Buffalobob" data-source="post: 108708" data-attributes="member: 8"><p>[ QUOTE ]</p><p>So why did the location of the spacer make any differnce at all in the primer cratering, well, in my opinion, its a simple matter of firing pin momentum. With the spacer at the rear of the assembly, its weight is not included in the moving striker assembly.</p><p></p><p>While the striker assembly may be faster, it will have less momentum when it strikes the primer allowing the chamber pressure to more easily push the firing pin back resulting in pierced primers at lower pressures.</p><p></p><p>With the spacer positioned on the forward end of the firing pin, its weight will be included in the moving striker assembly. While the firing pin velocity may be less, energy will increase as will momentum which seems to be enough to resist the chamber pressure forcing the firing pin back and limiting cratering </p><p></p><p>[/ QUOTE ] </p><p></p><p>By the time you get through you will be ready for an honorary degree in Mechanical Engineering from the School of Hard Knocks.</p></blockquote><p></p>
[QUOTE="Buffalobob, post: 108708, member: 8"] [ QUOTE ] So why did the location of the spacer make any differnce at all in the primer cratering, well, in my opinion, its a simple matter of firing pin momentum. With the spacer at the rear of the assembly, its weight is not included in the moving striker assembly. While the striker assembly may be faster, it will have less momentum when it strikes the primer allowing the chamber pressure to more easily push the firing pin back resulting in pierced primers at lower pressures. With the spacer positioned on the forward end of the firing pin, its weight will be included in the moving striker assembly. While the firing pin velocity may be less, energy will increase as will momentum which seems to be enough to resist the chamber pressure forcing the firing pin back and limiting cratering [/ QUOTE ] By the time you get through you will be ready for an honorary degree in Mechanical Engineering from the School of Hard Knocks. [/QUOTE]
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Interesting range tests with the 338 Allen Magnum....
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