I found a couple of different 3D models that I have been tinkering with and came up with Baleron. The fincan comes from Digbaddy's Estes Goblin - BT60/29mm Motor Builder's Kit and the nose cone was sourced from Vecinimod's Minimum Diameter High Power Rocket. I used ~ 180mm of BT60 body tube for the airframe and cut 29mm MMT to fit within the fincan, after resizing the motor mount tube (MMT) to accommodate the motor tube. I did not get it quite right and the tube was too tight, so I will need to open it a bit more for future builds. I also used my own 3D-printed motor retainer modified from Wardy89 (https://www.thingiverse.com/thing:3691731)
Steps in the build:
Files, including OpenRocket sims, can be found here: https://www.printables.com/model/532575
After the rocket gods took Mk1, I ran another print for Mk2. I tweaked the print just a bit, but nothing of consequence.