'JeanKS' - Welcome to the KCA Forum.

You have a nice model 1898 Krag that has been in your family for a long time.

There is no listing for #301082 in the Springfield Research Services Data that was printed in Mallory's, "The Krag Rifle Story", second edition, (or any number close to it).

#301082 was likely first assembled at Springfield Armory, around December, 1900, or January, 1901.

It is possible your stock and hand-guard, were not the original wood on your Krag.

Lots of Krags went back to Springfield or other arsenals for repair and rebuilding. Wood and metal components got switched around during the process.

Your wood appears to be Italian walnut. A lot of this was used in Krag stocks and hand-guards during the period 1899 to 1901. The small 'N' on your stock is likely the 'mark' of a sub-inspector or "stocker".

Your rear sight appears to be a variation of the 1902 Sight, that utilized a re-shaped model 1898 'three-notch' eye-piece and leaf, mounted on a model 1902 base.
A photo of the base, with the leaf 'up', so that the spring can be seen, would verify this.