Serial number 617,xxx Springfield model 1903 rifle was made in 1915 (1915 serial numbers were 595,601 to 660,121), the cartridge is a 30-06 Springfield (M1906). The original cartridge for the '03 was the 30-03 (.30 caliber, designed in 1903 and used a 220 grain bullet). In 1906 the army adopted the spitzer style bullet, reducing the weight of the bullet to 150 grains; the new cartridge became the 30-06. All '03's after 1906 were made for the 30-06. Note: The Springfield model 1903 rifle with serial numbers under 800,000 might have been made with improper heat treatment of the receiver (refered to as low numbers) and could shatter under firing pressure, causing injury.
.30-40 krag
30-06
With the serial number provided,your springfield model 1898 krag,was made in the year 1899.
All U.S. army springfield rifles were chambered in 30-06 caliber.
1934-1935 They were on limited production.
probably 30/06 unless the barrel was changed.............
Your model 1898 krag was made by springfield armory in 1899.
Your springfield armory model 1903 springfield rifle was made in 1932.
It's part of the cartridge name. 30 caliber designed in 1906 by the US Armory at Springfield.
Model 1911a1
your springfield 1911 was made in 1914
your springfield model 1903 was made in 1920.