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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
finally learning the importance of seating depth
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<blockquote data-quote="Mikecr" data-source="post: 1736129" data-attributes="member: 1521"><p>Look around for common nodes with your cartridge/bullet/powder. It used to be a lot easier to do this when ReloadersNest was online. Choose a charge that puts you between them. I choose a charge between upper & mid nodes, and do this testing while fire forming brass. This is also a good place & time to do some primer swapping.</p><p>Run full Berger recommended testing in phases coarse toward fine. Basically, find a good seating <em>window</em> that is preferably well off the lands.</p><p></p><p>Then with fire formed cases, bullets seated in best window, and primers showing good promise, move to powder testing, OCW or ladder (depending on what you want).</p><p>After powder go back to fine adjustments of seating, within it's window, for tightest group shaping. I go another stage to adjust <u>sizing</u> <u>length</u> of necks to dial in tension.</p><p></p><p>If your best seating ended up well off lands, you will never need to change seating again for the accurate life of that barrel. Keep that in mind before deciding to rely on a touching land relationship..</p></blockquote><p></p>
[QUOTE="Mikecr, post: 1736129, member: 1521"] Look around for common nodes with your cartridge/bullet/powder. It used to be a lot easier to do this when ReloadersNest was online. Choose a charge that puts you between them. I choose a charge between upper & mid nodes, and do this testing while fire forming brass. This is also a good place & time to do some primer swapping. Run full Berger recommended testing in phases coarse toward fine. Basically, find a good seating [I]window[/I] that is preferably well off the lands. Then with fire formed cases, bullets seated in best window, and primers showing good promise, move to powder testing, OCW or ladder (depending on what you want). After powder go back to fine adjustments of seating, within it's window, for tightest group shaping. I go another stage to adjust [U]sizing[/U] [U]length[/U] of necks to dial in tension. If your best seating ended up well off lands, you will never need to change seating again for the accurate life of that barrel. Keep that in mind before deciding to rely on a touching land relationship.. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
finally learning the importance of seating depth
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