I may be wanting something that doesn't exist, but here goes anyway. I'm trying to complete my collection of Model 10's in the heavy barrel configuration. Supica's book states that the heavy barrel began with the Model 10-1. Does this mean that all dash numbers thereafter had the heavy barrel as an option?
Is there any published reference to actual production by year, model and dash number that would clarify what configurations were actually manufactured in a given year or series of dash number.
From what I've seen, the heavy barrel configuration starts with the 10-6.
Any comments will be appreciated.