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If it were me, I'd want to work up to your pet load using the new cases just to play it safe. I remember years ago I was having trouble with flattened and/or cratered primers using loads right out of the manuals for the 8x57 Mauser with surplus military brass. I switched over to W-W brass and didn't have any more problems. I weighed the military cases and they were a lot heavier than the Winchester cases which presumably was indicative of less case capacity. I also tried the water bit and the military cases definitely did not hold as much. That was enough to confirm at least to me the importance of working up a load from scratch every time you change components. JMHO.
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01-10-2010, 07:39 AM
Hybrid Mode
