11/23/25 - Updated Description for clarity.

Hello,

With me being a cheap ass and not having the additional time to work on this idea of a printed primer pocket insert inside of an injection molded polyurethane/ polyethylene tube, I've decided to release it to those who may instead have better capabilities than I do to make this thing actually run.

The concept is basically a deviated take on the 43R printed ammo idea. Instead of printing the whole casing, this would just be a printed priming cup insert that holds the primer and powder. You would then, slide a molded polyurethane or polyethylene tube over it and glue it in place. Almost exactly like a shotshell.

Although this isnt as convenient as just printing it, it should theoretically allow for a stronger and more reliable shell than a regular printed shell.

With the provided STEP, this particular model uses a 11 OD & 9ID poly tube; the priming pocket cup insert is already set up for small pistol primers. With my initial testing, I have had issues with rims sheering when it was converted to be used within a harlot, although it worked, the goal wasnt to allow said rim to sheer. So, printed ammo is picky, keep that in mind.

LBRY Tags: guncad