20 gauge shotgun dummy round
thingiverse
This is a 20 gauge shotgun dummy round that fits into a cap from an old shell. I had trouble getting an all PLA model to last for very long so this one glues into the metal base. I melted the plastic from a used shotgun shell using a torch, this provides the base which you glue the print into with CA glue. There are holes in the bottom of the print to accommodate leaving the spent primer in place. This print is a little tight so you will have to set the cap on with a couple of light hammer taps.
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