One suggestion.

First, be aware that 38 special seater dies will work just fine for 9mm. Due to the variety of bullets I use in 38 special I ordered a batch of RCBS seater dies to save on shipping costs and ended up with a couple of spares. When I started loading 9mm that came in real handy because 9MM RN and 9mm XTP's have a drastically different setup for the seater die so I pulled a 38 special spare off the shelf and dedicated it to seating XTP's.

Point is that the RCBS seaters come with 2 different plugs, one for flat points and one for RN. It would be rather easy for a machine shop to take one of these plugs and machine a cavity in it that fits your bullet perfectly. BTW, these plugs are unhardened steel that is very easy to machine, I have one I used a center drill on to "build"a custom seater for the Hornady FTX 38 caliber bullets. Doing that was about a 1 minute job in a small lathe.