Mark - Sounds like your Remington 1903A3 has been cut-down for 'Hunting'. I can only imagine the 'Fireball' that comes out of a 16 inch .30-06 barrel.

Lots of people, who dabble in 'Bubba Guns', get real creative with stories, when they are selling them.

Good Pictures are invaluable when trying to ID and assess a collectable gun.

If you want to try to send pictures to me of your carbine or 1903A3 Springfield, I am sending you a PM with my email address.