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Old May 19, 2012, 06:14 AM   #10
Bart B.
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Join Date: February 15, 2009
Posts: 8,927
WWWJD, why are you so dead set against sizing fired case bodies?

For what it's worth, for sometime now, the benchrest folks winning matches have been full length sizing their fired cases slightly reducing their body diameters and setting their shoulders back a bit. High power match winners and record setters have been full length sizing their fired cases since the 1950's. Top competitors tried neck only sizing .308 Win. cases back in the early '60's when it was first used in rifle matches; didn't work as well as full length sizing. Sierra Bullets' uses full length sized .308 Win. cases in standard chambers testing their bullets up through 180 grains for accuracy; their best match grade ones shoot no worse than 1/4 to 3/8 MOA in their 200 yard test range.

Some folks full length sizing their .308 Win. cases get dozens of reloads per case with max loads in SAAMI chambers. I've got as many as 47. And annealing was never done. Full length bushing dies without neck expanders were used so the case necks weren't work-hardened with that neck-bending expander ball.

What load are you using that makes a few cases chamber significantly more snug than the others after being fired only once?
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