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Rifles, Reloading, Optics, Equipment
Reloading
CONCENTRICITY GAGE ?? Reloading for 1000 yards and beyond
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<blockquote data-quote="Bart B" data-source="post: 690828" data-attributes="member: 5302"><p>Try a 10-shot group without the magazine installed.</p><p></p><p>Detachable box magazines don't all fit the action parts with the same contact and tension. When M14NM semiautos were first used in competition, top competitors found that they had to use two magazines that made bullets shoot with good accuracy as well as to the same point of impact for 10-shot rapid fire strings; one with the first two rounds and the other with the last eight. Otherwise,a 1/2 to 1 MOA error happened between two of them. Then find another tight fitting magazine that held its position relative to the action exactly the same for each shot for slow fire at long range. Any relocation of the magazine to the action between shots from recoil is guaranteed to change the way the barrel whips and vibrates for that particular fit.</p><p></p><p>I doubt yours is any different. If it is, that's great.</p></blockquote><p></p>
[QUOTE="Bart B, post: 690828, member: 5302"] Try a 10-shot group without the magazine installed. Detachable box magazines don't all fit the action parts with the same contact and tension. When M14NM semiautos were first used in competition, top competitors found that they had to use two magazines that made bullets shoot with good accuracy as well as to the same point of impact for 10-shot rapid fire strings; one with the first two rounds and the other with the last eight. Otherwise,a 1/2 to 1 MOA error happened between two of them. Then find another tight fitting magazine that held its position relative to the action exactly the same for each shot for slow fire at long range. Any relocation of the magazine to the action between shots from recoil is guaranteed to change the way the barrel whips and vibrates for that particular fit. I doubt yours is any different. If it is, that's great. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
CONCENTRICITY GAGE ?? Reloading for 1000 yards and beyond
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