I assume this photo is one of yours?
I once made the mistake of loading a 620 film in my old 120 Voigtlander camera. It turns out that the holes at the end of the 620 takeup spool are smaller than the holes in the 120 spool. I had to rewind the entire film in total darkness to recover the 120 spool!
The negatives are exactly the same size, and the pictures came out perfect!
I hope you'll keep 'em coming!