Sirius Glass
Subscriber
Tsk tsk, you of all people should know better. The correct size is 12 exposures (or possibly, 24 if you still have 220 around).
I was interested in 220 when it first came out in the 1960's. There was always a lack of choices for emulsions, only those for professional photographers, cost twice as much as a 120 roll to buy, process and print. It was never made practical got non professional photographers. DOA from the start.