I would guess you loading hot if your only getting 4 .. I have some starline about to hit 20 loads and regular remmington ammo I get 7 to 8Maybe my loads are a little warm, but my brass does not last much past 4 firings with magnum handguns. I get splits in the 44mag brass. I anneal my 500s&w brass to keep it from splitting as quickly.
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