it was probably made in the 1960's era, many had no serial numbers, mossberg made most of them.
guns made in 1950 to 1960's had no serial numbers.
100-300
17 Remington.
wal-mart
It depends on the particular model of the rifle, not the caliber it is in. What model and make is it?
Depends entirely on who made it.
Bolt action, single shot or semi-auto?
I believe that bolt action rifle has a 5 round magazine and a 10 round magazine............................
1978.
If there are no markings on it you will never know.
Gun shop.
20-1000 or more depending on specifics