Ok, I posted like an id10t with info you already had. Here’s take 2:
I have been referencing the Rebel9/Rogue9 packages, which have ECM v3.64. But you’re right, the mandrel for .380, which should have a twist of 1:16, isn’t provided. You could still use the 9mm mandrel with its twist rate 1:10. I’m not sure how much of an effect that increased twist will have on accuracy. It might destabilize the bullet more quickly over distance. That’s something I’ll have to research, but your gun would still shoot fine with the 9mm rifling.
I’m pulling together the tools for my own project, so I haven’t completed a build yet. The main difference for chambering the .380 is in adjusting the dimensions of the chambering and throat tool. In the METRIC and IMPERIAL Tools Multi Caliber folder, you should find the STLs you need, including the tool spacing jig: “Tool Spacing Jig 9x18_9x19_380 METRIC”. It appears that tool spacing jig is cross-compatible, so I am guessing that you would need to adjust how much of the chambering rod is inserted into the chamber end of the barrel, as well as where the rifling mandrel begins.
It’s an interesting puzzle. I’ll have to take a closer look later this evening and see if I can figure out how this would work.
Ok, I posted like an id10t with info you already had. Here’s take 2:
I have been referencing the Rebel9/Rogue9 packages, which have ECM v3.64. But you’re right, the mandrel for .380, which should have a twist of 1:16, isn’t provided. You could still use the 9mm mandrel with its twist rate 1:10. I’m not sure how much of an effect that increased twist will have on accuracy. It might destabilize the bullet more quickly over distance. That’s something I’ll have to research, but your gun would still shoot fine with the 9mm rifling.
I’m pulling together the tools for my own project, so I haven’t completed a build yet. The main difference for chambering the .380 is in adjusting the dimensions of the chambering and throat tool. In the METRIC and IMPERIAL Tools Multi Caliber folder, you should find the STLs you need, including the tool spacing jig: “Tool Spacing Jig 9x18_9x19_380 METRIC”. It appears that tool spacing jig is cross-compatible, so I am guessing that you would need to adjust how much of the chambering rod is inserted into the chamber end of the barrel, as well as where the rifling mandrel begins.
It’s an interesting puzzle. I’ll have to take a closer look later this evening and see if I can figure out how this would work.