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Old June 9, 2014, 02:53 PM   #6
Unclenick
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Join Date: March 4, 2005
Location: Ohio
Posts: 21,052
Sometimes a badly stretched case will resist normal sizing. Lube and run the miscreants back into the sizing die and hold them there for a count of five, lower, rotate 1/3 turn and repeat, then do that a third, final time. I can usually take a couple more thousandths off length and maybe a quarter to a half a thousandth off diameter.

Try it. If it makes no difference, feel around each one for a burr that needs to be filed off. If that doesn't help, then set the cases up in a straight line on your table, press against the line with a ruler to even all the heads up, then sight down the row to see if the case shoulders and mouths line up well. If not, you likely have a bent rims. They can be straightened by firing in a bolt gun, assuming it has good lug contact and a true bolt face.
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Last edited by Unclenick; June 13, 2014 at 02:47 PM. Reason: typo fix
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