'MattNC' - Your Krag was assembled at Springfield Armory around September, 1898.
The Stock marking, "J.S.A. 1898" is the 'acceptance cartouche' and agrees nicely with the probable manufacture of your rifle. (Joseph Sumner Adams was the Foreman of the Assembly Room and his initials appear on the majority of U.S. Krags).

Your Krag has real nice color on its metal parts and the 'cut-down' stock is likely the original wood.
It seems like Krags, that people 'cut-down', often have very nice bores. (Who, in the old days, was going to bother putting work and effort into a rifle with a rough bore)?

'Knute1' is correct in 'advising that the barrel be held down' in its channel in the forearm.
The Krag trigger-guard screws are very close together. If there is no barrel-band or forearm screw anchoring the barrel to the stock, upon firing the Krag barrel torques upward, putting a lot of stress on the wood behind the magazine opening.

(If a band or screw is lacking, an easy 'temporary fix' is to put some tight wraps of 'blue masking-tape' around the stock and barrel for Range Sessions).

Your Krag has had its "magazine cut-off lever" removed. (This is a sort of switch, which allows the Krag to be changed from 'single-shot' to 'magazine-fed' rifle).
This is not an essential part, but, its lack can add roughness to cartridge feeding.
This is a common part that sells for about $20 at gun shows and on Ebay. The model 1898 version is about 2 inches long; the shortest of the U.S. cut-offs.

p.s. If you haven't already done so, "click" on the cross-rifle logo at the top of this page, that will take you to the KCA Web Page. All kinds of interesting stuff accessible there, especially via the 'photo tab'.

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