Thread: WMR powder.
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Old August 9, 2001, 06:24 PM   #1
Paul B.
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Join Date: March 28, 1999
Location: Tucson, AZ
Posts: 3,215
WMR powder.

Has anyone had problems with this powder by Winchester? I loaded some .300 Win. Mag. ammo last year in July with temps running in the 100 to 110 degree range. Loads were safe. When I retested them in September at 82 degrees, they gave signs of very high pressure, stiff bolt lift, shiny ejector marks, ect. All loads were in a batch of new Winchester brass.
A query to Winchester a month ago has brought no response, but the powder has been discontinued? Is this stuff unsafe at cooler to colder temperatures?
Thanks for any help.
Paul B.
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