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95% of standard milsurp non specialized ball .308 will be fired through a machine gun and they have "generous" chambers. Usually have to give a little extra tug on the press handle to full length size.I’ve been processing a lot of older brass and noticed that Lake City (LC) head stamp .308 brass has more swelling at the base compared to Nosler, WWC or others. Is this because it might have been shot through military weapons (M-60) that may have looser chamber diameters allowing the swelling? Anyone else noticed this? palmettomoon