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Rifles, Reloading, Optics, Equipment
Gunsmithing
Truing an action.
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<blockquote data-quote="J E Custom" data-source="post: 1869357" data-attributes="member: 2736"><p>Read the new post and decided to add a few comments. </p><p></p><p>There are all kinds of theories about what should and should not be done when truing an action, so I use the common sense rule.</p><p></p><p>Why do we true actions ? Answer = To bring everything into alignment with the bore centerline.</p><p></p><p>Why align everything ? Answer to prevent any movement during firing Pressure.</p><p></p><p>What does lack of movement do for the performance of a cartridge ? Answer = It makes the cartridge consistent shot to shot and extends case life. It also aligns the sear and case head so uneven stress and wear doesn't distort the surfaces of ether.</p><p></p><p>So if the squareness and alignment is as good as we can get with no outside interference's from ejectors, triggers, sloppy sizing, poor concentricity of the ammo as loaded. when the round does go off, all cartridges will react the same every time and better accuracy will be obtained.</p><p></p><p>If there is any misalignment, when the round fires and the chamber reaches the highest pressure,</p><p>It will ether distort the case because of misalignment, or move off the bore centerline. And because of these out side forces that were applied during action truing, any misalignment/ movement will be applied during firing Effecting everything.</p><p></p><p>If it is aligned before firing due to ejectors, triggers,out of square bolt faces or any other external forces, the pressure will force it into misaligned state if it is allowed to, so we true everything in the position we want when/during firing and under pressure.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1869357, member: 2736"] Read the new post and decided to add a few comments. There are all kinds of theories about what should and should not be done when truing an action, so I use the common sense rule. Why do we true actions ? Answer = To bring everything into alignment with the bore centerline. Why align everything ? Answer to prevent any movement during firing Pressure. What does lack of movement do for the performance of a cartridge ? Answer = It makes the cartridge consistent shot to shot and extends case life. It also aligns the sear and case head so uneven stress and wear doesn't distort the surfaces of ether. So if the squareness and alignment is as good as we can get with no outside interference's from ejectors, triggers, sloppy sizing, poor concentricity of the ammo as loaded. when the round does go off, all cartridges will react the same every time and better accuracy will be obtained. If there is any misalignment, when the round fires and the chamber reaches the highest pressure, It will ether distort the case because of misalignment, or move off the bore centerline. And because of these out side forces that were applied during action truing, any misalignment/ movement will be applied during firing Effecting everything. If it is aligned before firing due to ejectors, triggers,out of square bolt faces or any other external forces, the pressure will force it into misaligned state if it is allowed to, so we true everything in the position we want when/during firing and under pressure. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Truing an action.
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