Your riflle's Lever Boss Code and serial number both comply with your rifle being made in 1961. However, the "Chicopee Fall, Mass." address on its barrel doesn't comply with that mfg. date since Savage moved their manufacturing facilities to Westfield, Mass. (still their current lociation) in 1960.
This is not the first time I've seen situations like this. Apparently, what someone at Savage did was set this rifle's barrel aside for some reason only to put it back on the assembly line a year or so later and allowed it to be fitted to a just manufactured rifle that needed a barrel and shipped out.
Then, too... close to the 1960 moving date, it is possible the barrel was made BEFORE 1960 since it has the "Chicopee Falls" address on it. Then it was used in a rifle that was actually manufactured in Westfield a year or two later.
Like one very knowledgable fellla I know sez, "With Savage, you never know for sure"... and that's is a realistic assessment of how these strange situation occur with Savage products of that era.
Strength & Honor...
Ron T.
