I decided to have a go at drawing a Bullet Puller. Here is what I have come up with. The overall concept is similar to those available on the market. The difference with this one is it uses the standard shell holder from your press to hold the case. I have also added a nice TPU bumper you can plug onto the end to offer some impact resistance - seems to work well. The only thing you will need to supply is a 10mm bar. I have used steel but plastic or timber should also work as long as it is robust enough to take a beating. Assemble as pictured, use a couple drops of AC glue to secure the body and handle to 10mm bar.

PETG 

Body should be printed with 100% infill for strength.

The screw cap (Top) and Handle can be printed with standard setting 15% infill

TPU

Bumper should be printed using cuboid infill @ 60%

Enjoy!