Original brass cartridges for the Smith, Gallagher, Burnsides, etc., carbines that used external priming generally had the flashhole sealed with a bit of beeswax or tallow.
The force of the primer was enough to knock the sealant out of the way.
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"The gift which I am sending you is called a dog, and is in fact the most precious and valuable possession of mankind" -Theodorus Gaza
Baby Jesus cries when the fat redneck doesn't have military-grade firepower.
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