1934-1935 They were on limited production.
Springfield Armory
.30-40 krag
30-06
All U.S. army springfield rifles were chambered in 30-06 caliber.
100-1000 depending on specifics
National Match
Springfield Armory was created in 1777.
your rifle was made in 1940
probably 30/06 unless the barrel was changed.............
With the serial number provided,your springfield model 1898 krag,was made in the year 1899.
I believe Its "V-16".
30-06 but be forewarned that serial numbers below 800000 are dangerous to fire due to poor heat treatment. See: http://m1903.com/03rcvrfail/