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I used reloaded 15 for many years loading 243 and 223 no problems. I have now changed to Vihtavuori 120.Papua cases. Starting load 19.3 grins Max22.7 grns.

Starting at 21.5 grins very accurate but primer showed crater.Reduced to 21.grins then 20 and now 19.3 grins primer still shows slight crater.Help please .Alpine 

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Andy RV .cartridge 223 Rem.Bullet 50grin v max.case Lapua . Powder n120. Starting load 19.3 Max load 22.7grins.

I loaded 21.0 grins very accurate in fact 3 shot at 100 yds touching.But noticed small crater on primer Cci400. Same thing happened   when I  tried benchrest primers

Reduced load to 20.5 then.20 grns. Then min load of 19.3 still light crater mark. No other pressure problems. Would be interesting if anyone had similar problems.

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