What is the caliber of my Remington rifle ?

Question
Mr. Zukowski:

My father gave my a Remington rifle. It is engraved: " SPRINGFIELD 30 CAL. 1906. Also engraved EXPRESS 29749.

He said it is a 30-06.

Would that be correct and does the serial(?) number give any clue as to the era of manufacture ?

I appreciate any assistance in increasing my knowledge of this firearm.

Thank you, Steve

Answer
Hi Remington's are do not have serial number serial number dating. Those made from 1921 to 1972 have date codes.
http://www.remingtonsociety.com/questions/BLACKPOWDERX.htm
http://www.remington.com/products/archived/centerfire/bolt-action/model-30-expre
Those markings are 30-06.
Your rifle is sporterized M1917 Enfield rifle made after WWI.