9mm dummy round
thingiverse
a 9mm snapcap or dummy round with a few tweaks the rim has some chamfer to help reduce elephants foot if you are squishing also a primer pocket, I sometimes print primers in tpu, on the off change you care, you could even just squirt some silicone or rtv
Download Model from thingiverse
With this file you will be able to print 9mm dummy round with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on 9mm dummy round.