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Paul B. · August 9, 2001, 06:24 PM

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.

August 9, 2001, 06:24 PM	#1
Paul B. Senior Member Join Date: March 28, 1999 Location: Tucson, AZ Posts: 3,802	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. __________________ COMPROMISE IS NOT AN OPTION!