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Rifles, Reloading, Optics, Equipment
Reloading
My salt bath annealing
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<blockquote data-quote="LeddSlinger" data-source="post: 1580064" data-attributes="member: 65338"><p>Annealing mostly benefits SAAMI cases where a person is using standard dies. The cases get worked vigorously back and forth from fireform shape to FL sized shape. The excessive work hardening makes the brass brittle which shortens case life and reduces case dimensional consistency. Annealing is required to avoid split necks, stubbirn hardened case shoulders that no longer set back properly in the die, and erratic neck tension. So in this instance, YES, annealing is very important to maintaining "consistent" accuracy in a SAAMI spec chamber rifle using standard off the shelf reloading dies.</p><p></p><p>With custom rifles it can be a little different if a person knows how to set everything up properly during the build. By purchasing a custom reamer, you can get the rifle chambered, then have a company like Whidden create a custom sizing die that is specifically designed to only size the case to the minimum amount required for chambering. This way the brass is worked a LOT less from fireform shape to FL sized shape and the brass maintains its elasticity for a much longer period of firings. Other features Whidden dies allow is the use of a properly sized bushing along with a custom expander ball to help reduce the work hardening on the neck. So with a properly spec'd custom sizing die, bushing, and expander ball, the need for annealing to maintain accuracy or prolong case life can be virtually eliminated because the brass is moved very minimal amounts between firing and sizing.</p></blockquote><p></p>
[QUOTE="LeddSlinger, post: 1580064, member: 65338"] Annealing mostly benefits SAAMI cases where a person is using standard dies. The cases get worked vigorously back and forth from fireform shape to FL sized shape. The excessive work hardening makes the brass brittle which shortens case life and reduces case dimensional consistency. Annealing is required to avoid split necks, stubbirn hardened case shoulders that no longer set back properly in the die, and erratic neck tension. So in this instance, YES, annealing is very important to maintaining "consistent" accuracy in a SAAMI spec chamber rifle using standard off the shelf reloading dies. With custom rifles it can be a little different if a person knows how to set everything up properly during the build. By purchasing a custom reamer, you can get the rifle chambered, then have a company like Whidden create a custom sizing die that is specifically designed to only size the case to the minimum amount required for chambering. This way the brass is worked a LOT less from fireform shape to FL sized shape and the brass maintains its elasticity for a much longer period of firings. Other features Whidden dies allow is the use of a properly sized bushing along with a custom expander ball to help reduce the work hardening on the neck. So with a properly spec'd custom sizing die, bushing, and expander ball, the need for annealing to maintain accuracy or prolong case life can be virtually eliminated because the brass is moved very minimal amounts between firing and sizing. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
My salt bath annealing
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