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Calebwalter

Newbie neck tension confusion

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11 hours ago, Mike S said:

Looks like you are good to go with the .286 bushing.

The reason I asked about the O.D. is based on experience with a Redding FL  Bushing Die for my .308. That die with thin walled .308 WW brass would size well below the marked bushing diameter. I believe that was due to sizing over .010" in one pass. Redding cautions not to try over .004" in one step if I recall correctly. 

Good luck with your reloading endeavors!

 

This is kind of what I was thinking. Maybe pushing that .294 neck through the .287 bushings was causing the neck to deform somewhat. 

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I think the entry taper comes into play as well. You might try flipping that bushing the other direction if possible.

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Over the many decades of reloading I have settled on using a RCBS partner press with a universal de capping die, Forester sizing dies with de-capping/expander removed and the Sinclair Expander. I get runouts around .001-.002 and excellent accuracy. If you get a 6.5 expander for $100 then just neck bushing your brass down just enough to require a bit of expansion. With not all pieces of brass being uniform in neck thickness or concentric thickness the expander gives you a uniform inner case mouth diameter and concentricity. Enclosed is picture of results using expander.

IMG_1416.jpeg

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