May have more capacity or brass is just thinner.
Rem, Lapua and Norma cases all shoot the same with the same load in my .260
With very little velocity variances.
I get the best life out of Rem and Norma brass, go figure.
I have had major velocity effects with different brass that was similar in weight in other calibres tho.
You are going to go to shit with all this indepth analysis ebf😆
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