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Old September 27, 2006, 07:51 PM   #1
charlie in md
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Join Date: November 22, 2005
Posts: 185
Winchester 630 powder

I just lucked into a free keg of winchester 630 powder. I've checked it and it still seems in good condition. It may be 20 years old, as my old sierra reloading book mentions loads for the 44 mag using it. I also was given some pages copied from a speer manual that has 630"P" loads. DOes anyone know if there was a difference between 630 and 630P?
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Old September 27, 2006, 11:31 PM   #2
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Join Date: November 25, 2004
Posts: 132
winchester 630

Hello Charlie,
Hey I got a deal on 8 pounds of W630 and a 54 caliber Senca barrel for $120
at the Flea Market once.

I loaded up the powder in my 44 mag. and the higher the charge the better things went.

The two powders seem so close. Try this site:

Happy shooting
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Old October 8, 2006, 11:23 AM   #3
Join Date: March 8, 2005
Posts: 35
Thanks Scott for the link; that is a nice chart!
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Old October 8, 2006, 03:01 PM   #4
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630 loads are not interchangeable with 630P loads. 630 was a good powder but seems to be very temperature sensitive which I think is one of the reasons my winchester stop selling it as a cansister grade powder.
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