There is a training rifle for the Springfield. It is designated as the "Gallery - Practice Rifle
caliber .22-model of 1903". It is identical to the 1903, except for the. 22 caliber barrel (and sometimes the sight leaf and the firing pin spring) - but not always. The balance of the parts are regular 1903 parts. Some of the expensive and complicated to make parts are sometimes marked .22. These .22 marked parts are defective, and can only be used on the .22 rifle. They are marked .22 to keep them from ever being installed on the regular 30-06 rifle.

The barrel is rifled for the .22 short round. The .22 round is inserted into a cartridge holder that resembles the 30.06 round. This cartridge holder can be loaded into the magazine singly or using a stripper clip 5 rounds can be loaded into the magazine. Just like a regular 1903. The cartridge holder and "chamber" it fits into are dimensioned so that it will not fit into a 30-06 chamber , nor will a 30-06 fit into the .22 rifle. So, no accidents.

The idea was to have an economical training rifle that exactly duplicated all of the actions needed to use the regular 1903 and not have to remember any exceptions. They were made from 1907 to about 1919.

Hope I haven't goofed anything up here. "The Book of The Springfield" by Col. Brophy has some really excellent info on this .22 trainer.

Regards, Johnny Lawson