Brass Volume

270Weatherby

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Joined
Aug 17, 2009
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124
I have been comparing Weatherby brass vs. nosler brass in 300wby. The Weatherby brass holds atleast 2gr more powder than the nosler brass. I am working loads up with H1000 and 7828ssc. I am finding same powder charge weights are compressed in Nosler brass and not compressed in Wby brass. My question is... how does the case volume affect velocity/pressure? Any advice on this will help.
 
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