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Rifles, Reloading, Optics, Equipment
Reloading
Neck turning - How much is too much?
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<blockquote data-quote="AZShooter" data-source="post: 608406" data-attributes="member: 5219"><p>You have stated some of the details but not enough to give a good answer. What chambering is this? </p><p>Is this unturned once fired brass? </p><p></p><p></p><p>There has to be some space between the chamber neck and the loaded ammo for bullet release. Factory chamber necks are usually quite large to accomodate a variety of ammo and situations. </p><p></p><p>If your rifle is a custom you can order a custom reamer and specify the chamber neck dimension and turn necks accordingly or request a no turn neck. If it is a hunting rifle I would research what others are doing. Generally most hunting rifles with custom made chambers will be using a total clearance of at least .004" or more.</p><p></p><p>If the gap is too large the necks will be over worked expanding to fit the chamber neck upon firing then be sized back to a useable dimension for gripping the bullet. Neck cracks will show early in the brass's life. </p><p></p><p></p><p></p><p> I have a 30 BR that has a .332" diameter chamber neck. The brass has been turned to .011". This leaves a .001" clearance on each side of the cartridge for bullet release. This is generally the smallest dimension that a BR shooter will go. This requires using steel wool on the necks after firing before resizing. If any soot would be allowed to accumulate it could tighten up the small gap between the case wall and the chamber causing high pressure. This is unpractical for any sort of LR hunting rig. </p><p></p><p>Give us some more details and we can get more specific.</p></blockquote><p></p>
[QUOTE="AZShooter, post: 608406, member: 5219"] You have stated some of the details but not enough to give a good answer. What chambering is this? Is this unturned once fired brass? There has to be some space between the chamber neck and the loaded ammo for bullet release. Factory chamber necks are usually quite large to accomodate a variety of ammo and situations. If your rifle is a custom you can order a custom reamer and specify the chamber neck dimension and turn necks accordingly or request a no turn neck. If it is a hunting rifle I would research what others are doing. Generally most hunting rifles with custom made chambers will be using a total clearance of at least .004" or more. If the gap is too large the necks will be over worked expanding to fit the chamber neck upon firing then be sized back to a useable dimension for gripping the bullet. Neck cracks will show early in the brass's life. I have a 30 BR that has a .332" diameter chamber neck. The brass has been turned to .011". This leaves a .001" clearance on each side of the cartridge for bullet release. This is generally the smallest dimension that a BR shooter will go. This requires using steel wool on the necks after firing before resizing. If any soot would be allowed to accumulate it could tighten up the small gap between the case wall and the chamber causing high pressure. This is unpractical for any sort of LR hunting rig. Give us some more details and we can get more specific. [/QUOTE]
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Neck turning - How much is too much?
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