Considering the era, I think the absence of a 10ga is more notable.
The 10 gauge had passed it's zenith by the time Ansley entered the business. The improvements in ammunition that allowed the average hunter to deliver the same payloads with a much more nimble gun coupled with the end of market hunting with the decline in waterfowl number pretty much doomed the big "boomers". For those that still needed the Magnum firepower Fox did introduce the Super Fox made famous by Nash Buckingham and Sterlingworth Wildfowler for those less healed to fill that nitch.
