Being a shotgun guy, I immediately zeroed in on the RemShots segment on the Remington Model 10 on pages 4 and 5. I notice that there is quite a difference between the serial number chronology in that RemShots segment done for shipping records --

which goes up to 274995 and the old "between the Wars" factory ledger, available on this web site --


with serial numbers going up to 277990. Any way to reconcile these?