Try Springfield Sporters they have a good selection of Enfield parts.
yes there is a springfield .303 i have one from 1942 its a springfield rifle with a .303 british barrell
number5 mark 1 enfield 303 british jungle carbine
yes it is just a difreint mesherment 303 is british and 7.7 is jap.
British 303
Combination of serial number and features.
50-300 or so
No, a 303 is a rimmed cartridge, the 308 is rimless.
7.7x56R, more commonly sold as the .303 British.
Up to the 1950s, it was the British Enfield 303 caliber rifle.
You will have to search for books on the unit.
303 was the .303 inch diameter bullet that was fired by the Short Magazine Lee Enfield- or SMLE. Standard rifle of the British military from 1907 to the1960s, and still in limited use today.
If still in the original configuration, these were chambered for the .303 Enfield, aka .303 British.