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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity .. how important?
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<blockquote data-quote="J E Custom" data-source="post: 1439842" data-attributes="member: 2736"><p>Normally it is not the dies that cause the cases to be formed off center, It is the press. Any misalignment in the press with the dies may cause the misforming of them. What seems to help starts with turning all of the necks true and equal in thickness, Then if the chamber is truly concentric, it will produce concentric cases. Next it is important to allow the shell holder/shell plate the ability to self align with the dies, Some presses also have a floating die holder to also help align cases in the dies. I am currently in the process of buying a press with these features.</p><p></p><p>The other thing one can do is as he/she is loading, check the concentricity as they go through the process. One thing we used to do to help was halfway through the bullet seating process we stopped and rotated the loaded case 1/2 turn and finished seating the bullet.</p><p></p><p>Checking with a good concentricity gauge will normally show if you have poor equipment and/or a poor procedure.</p><p></p><p>J E CUSTOM</p></blockquote><p></p>
[QUOTE="J E Custom, post: 1439842, member: 2736"] Normally it is not the dies that cause the cases to be formed off center, It is the press. Any misalignment in the press with the dies may cause the misforming of them. What seems to help starts with turning all of the necks true and equal in thickness, Then if the chamber is truly concentric, it will produce concentric cases. Next it is important to allow the shell holder/shell plate the ability to self align with the dies, Some presses also have a floating die holder to also help align cases in the dies. I am currently in the process of buying a press with these features. The other thing one can do is as he/she is loading, check the concentricity as they go through the process. One thing we used to do to help was halfway through the bullet seating process we stopped and rotated the loaded case 1/2 turn and finished seating the bullet. Checking with a good concentricity gauge will normally show if you have poor equipment and/or a poor procedure. J E CUSTOM [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Concentricity .. how important?
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