I have heard that patent use numbers were sold in allotments to makers. Presuming this gun was made by someone else in the trade and retailed by EM Reilly, that could explain the higher use number. Of course, this is mere speculation on my part. Not sure we will ever know for certain who made the barreled action. But it does look like a Westley Richard's "gold name" action except for no third bite. Russ