Most likely 30/06. Have it examined by a gunsmith.
Winchester produced a total of 545,511 model 1917 rifles for the war effort between 1917 and 1919.As your serial number is 542873 I would assume it was made in 1919.
If you mean the US Rifle, Caliber 30, Model of 1917, manufactured by Remington, these were produced only in 1917-1918.
You will have to contact Winchester.
32 caliber... "32 W.S." is the designation for the 32 caliber Winchester Special cartridge.
== == What is the value of 30 caliber Winchester 1894 ?
how many Winchester Model 100's were made in the .284 caliber?
Your Winchester model of the U S model 1917 30-06 caliber rifle was produced by Winchester from 1917-1919.
your Winchester model 1894 was made in 1909.As to the caliber it should be marked on the barrel of the rifle.(ie,30 wcf.is 30-30 caliber).32wcf is 32 Winchester special.38-55 is another possable caliber.
The caliber of your Winchester should be plainly marked on the firearm.You do not say whether you have a shotgun or rifle?This may make a difference.
The Winchester 55 .22 caliber was not serialized.
Your Winchester model 9422M,.22WMR caliber was made by Winchester in 1974.
Which model and what caliber