.31 Spccial cases with folded hearts which ha?e had the webs cracked and blown away. This is a serious tault In fired eases and should be watched lor. It permits an excessive pressure to reach the primer, driving it back violently against the recoil plate of the revolver and may damage the latter.
A. revolver recoil plate which has been cracked by the primer set-back from high-pressure loads or cases having enlarged flash-holes.
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