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The Range
Ammo & Reloading
maybe anal .0005"
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<blockquote data-quote="swampratt" data-source="post: 2829101" data-attributes="member: 15054"><p>I visited neck turning with some LC .308 cases and gained zero accuracy..I turned other .308 cases and no accuracy there..I sorted cases by weight and my 3 foulers were more than 2 grains different in weight and those grouped the tightest of the day..I was scratching my head on that one.</p><p></p><p>I eventually cut my barrel shorter..it was 24" now 20.5.. accuracy improved and fliers unexplained ones were eliminated..Savage 10FP.</p><p>I kept the other cut off end of the barrel and there are 2 grooves that have no wear pattern or marks.. the other grooves have plenty..messed up barrel at the last 1/2". This thing never shot well.</p><p></p><p>No aviator I am not using one I have thought of getting one though. But the way I see it ,, when I chamber a round that is long and the bullet is colored with a marker there is a point where the rifling grooves touch just a part of the loaded round.</p><p></p><p>My chamber is not a match chamber..If i send the round up the ramp from the magazine i feel that may make the concentricity out a bit .</p><p></p><p>If you have a gauge do me a favor and check the rounds for straightness and then fill the magazine full and chamber and extract them all and measure them again.</p><p>I have wondered if that tweaks them.</p></blockquote><p></p>
[QUOTE="swampratt, post: 2829101, member: 15054"] I visited neck turning with some LC .308 cases and gained zero accuracy..I turned other .308 cases and no accuracy there..I sorted cases by weight and my 3 foulers were more than 2 grains different in weight and those grouped the tightest of the day..I was scratching my head on that one. I eventually cut my barrel shorter..it was 24" now 20.5.. accuracy improved and fliers unexplained ones were eliminated..Savage 10FP. I kept the other cut off end of the barrel and there are 2 grooves that have no wear pattern or marks.. the other grooves have plenty..messed up barrel at the last 1/2". This thing never shot well. No aviator I am not using one I have thought of getting one though. But the way I see it ,, when I chamber a round that is long and the bullet is colored with a marker there is a point where the rifling grooves touch just a part of the loaded round. My chamber is not a match chamber..If i send the round up the ramp from the magazine i feel that may make the concentricity out a bit . If you have a gauge do me a favor and check the rounds for straightness and then fill the magazine full and chamber and extract them all and measure them again. I have wondered if that tweaks them. [/QUOTE]
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maybe anal .0005"
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