winchester model 250 serial number lookup
Click the image below to download the PDF document containing the serial number date-range information on many Winchester firearms. You will need the Adobe Reader program to open this file. Adobe Reader is available free from Adobe.
There is probably some kernel of truth to all of them. But the fact remains; there is no original, single, totally accurate database of serial numbers from 1866 forward that we are aware of. But perhaps these pages can help you somewhat in your research.