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Old March 28, 2009, 12:09 AM   #24
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Join Date: February 27, 2009
Location: NC Foothills
Posts: 1,150
I'm interested in seeing what measurement you get with fire formed cases (once fired). I once bought a lot of .300 Weatherby brass that just would not chamber in my M700 Rem. Even after full length sizing on my RCBS dies, the shoulder dimension was off by at least .004-.005". Those really long cases were still within spec., as Guffey reports. Fire forming with a light load solved the problem and saved a couple hundred pieces of high $$$ brass.

As for brass flow, you really only notice this when loading rimmed cartridges and trimming for length. After just a couple of uses, you'll have to turn the necks down. Belted cases will get really light just above the belt.


Last edited by a7mmnut; March 28, 2009 at 12:10 AM. Reason: addition
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