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Rifles, Reloading, Optics, Equipment
Reloading
loading for a ar10?
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<blockquote data-quote="Bart B" data-source="post: 1123323" data-attributes="member: 5302"><p>Stack a bunch of cases head down against a straightedge on a really flat surface. Push them together head to head. Look down across their mouths; they won't be in a perfectly straight row if the case heads are out of square. Twist them all about 1/3 of a turn and notice how each one is now a bit off from where it was before. You can use two cases in place as a reference then put each case between them and turn it to see how much its mouth is not aligned with the other two.</p><p></p><p>For a 2.000" long .308 case, for every .001" out of square at one side of a case head across to the the other side, the case mouth will be about .005" off center from a vertical line made straight up from the case head center. The diameter of the head that rests on the flat surface is about .400" or 1/5th that of the case length.</p><p></p><p>Some years ago, I was talking with the captain of the US National Guard Rifle Team about reloading fired cases from semiautos. He said they tried all sorts of reloading dies and techniques reloading fired match ammo cases in an effort to reduce ammo costs. Nothing even came close to what new cases produced.</p></blockquote><p></p>
[QUOTE="Bart B, post: 1123323, member: 5302"] Stack a bunch of cases head down against a straightedge on a really flat surface. Push them together head to head. Look down across their mouths; they won't be in a perfectly straight row if the case heads are out of square. Twist them all about 1/3 of a turn and notice how each one is now a bit off from where it was before. You can use two cases in place as a reference then put each case between them and turn it to see how much its mouth is not aligned with the other two. For a 2.000" long .308 case, for every .001" out of square at one side of a case head across to the the other side, the case mouth will be about .005" off center from a vertical line made straight up from the case head center. The diameter of the head that rests on the flat surface is about .400" or 1/5th that of the case length. Some years ago, I was talking with the captain of the US National Guard Rifle Team about reloading fired cases from semiautos. He said they tried all sorts of reloading dies and techniques reloading fired match ammo cases in an effort to reduce ammo costs. Nothing even came close to what new cases produced. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
loading for a ar10?
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