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Questions about powder & Case changes

 
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Old 02-24-2012, 05:46 PM
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Join Date: Jul 2009
Location: Kamiah, Idaho
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Questions about powder & Case changes

I have been using the same brass for my 300 WM for about 4 years and with this load I'm using Berger 185 VLD's. So I got some new brass. I also ran out of my H1000 and had to get a new lot. I loaded the load I had developed with the new powder in both the old brass and the new brass. Here is my ave. velosity differences. Old cases and old powder = 2933; Old cases new powder = 2898 ; New cases new powder = 2882. Is this normal to have that kind of a change when you change lots of either powder or brass or both?
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Old 02-24-2012, 07:25 PM
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Re: Questions about powder & Case changes

Absolutely. Primers will do that as well if you change from one type or brand to another. As far as I have ever heard Lot's of powder will always vary from lot to lot no matter what label happens to be on the powder.

Gary
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