12Ga de-primer / re-primer punch tool
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Simple tools for removing and seating primers in 12Ga shotshells
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Model information
- Source
- Printables
- Category
- Outdoor Sports
- License
- Creative Commons — Public Domain
I wanted to make a simple toolset for punching out fired primers and reseating new ones in 12 gauge shotshells. I haven't done much testing with different brands of shells but it fits and works well with Winchester Super Target shells.
The head of the guide body could use some refinement and I may update this if no one else remixes it, the head has a chamfer to make it easy to spread any fold crimps open, but it doesn't fit all the way into the base (ID of the shell gets smaller).
The Primer catcher holds the rim of the shells snuggly (so the dimensional accuracy of your printer may affect that part) and will give you space below the shell to punch out the primer.
I would not recommend printing this on a bed slinger, the PunchRod.stl almost certainly would wobble. It printed well on my core XY (CORE One L)
Ideally my plan is to have this machined out of some type of tool steel once I get it to a state I like but consider this a V1.