Many of the 1884 Rifles were issued to Volunteer Guard units from the various states during the Spanish American War 1898-1899. In the Springfield Research Services books I found that serial numbers 456085 and 456115 were both issued in 1898 to Company L, 2nd Virginia Volunteer Guard. You can contact the Springfield Research service for more information: http://springfieldresearchservice.com/
Texas Military Forces Museum
Dear Mr. Anthony,
Thank you for posting your request on History Hub!
Military records in our custody do not include the record of assignment and operational activity of individual pieces of equipment. Under normal War Department and Department of the Army records management procedures, such documentation would be destroyed after initial administrative use.
We searched the National Archives Catalog and located 27 record series of the Springfield Armory from the 1880s in the Records of the Office of the Chief of Ordnance (Record Group 156) that may include the design and technical specifications of M1884 rifles, carbines and cadet rifles. For further information about these series, please contact the National Archives at Boston (RE-BO) via email at firstname.lastname@example.org.
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. We apologize for this inconvenience and appreciate your understanding and patience.
The website Gun Data has a chart showing the manufacture date of Springfield trapdoor rifles and carbines based on serial number.
In addition, the Springfield Armory National Historic Site has records or publications that may be of interest.
We hope this is helpful. Best of luck with your research!