Yes, I got some 10 ga. results that differed only in that some had factory primed Cheditte, some I primed with Cheditte 2000s. They were 1Kpsi different! There was a thread speculating on what came in factory primed Cheditte hulls, we still don't really know. That's why I tested identical loads factory vs. Cheditte 2000 (that's what we're all buying). Surprised me. Now, those loads were 4200 PSI vs. 5200PSI for my Damascus guns, Ho-hum, but on the "snotty" end, might matter.
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