Dear Ms. Sigsbee,
Thank you for posting your request on History Hub!
According to the information on the following chart, a Krag rifle with that serial number would have been manufactured in 1902: https://gun-data.com/krag_rifles_carbines.html.
The records of the Springfield Armory are in the custody of the National Archives at Boston (RE-BO) and may be contacted via email at firstname.lastname@example.org. There are also Records of the Office of the Chief of Ordnance (Record Group 156) in the custody of the National Archives at Washington, DC - Textual Reference (RDT1) and may be contacted via email at email@example.com. These records can provide information about the design and acquisition of various models of firearm, to include Krags. However, these records do not include documentation of the service history of individual firearms. Under normal War Department and Department of the Army records management procedures, such documentation would be destroyed after initial administrative use.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RE-BO and RDT1. We apologize for this inconvenience and appreciate your understanding and patience.
You also may wish to contact the Krag Collectors Association.
We hope this information is helpful. Best of luck with your research!