It could be that you have a A-bolt hunter model I,But I am not 100%certain.I can say that your browning bolt action rifle was made in the year 1979 by the two letters in the serial number(RN).
It will be marked.
The Browning BAR model and the bolt action lineup that included the Safari and the Medalion.
Besides a number of books published on Browning, and some of the gun collector forums (google Browning collectors) you might start with Browning. They have a website, and are still in business making very nice rifles, shotguns, and pistols.
100-300
100-400 or so
100-400 USD
It is a bolt action rifle.
At least 500 dollars for one in the condition that you describe.
To tell if you have a Browning Gold Medallion 7 mm mag, you can compare this rifle to the Browning rifles pictures on websites like GunsAmerica. Make sure you have a bolt action rifle with a Browning markings on the buttstock and on the bolt.
The small caliber and action Browning Safari grade bolt action rifles were made from 1959-1975.Your rifles action was made by Sako.The serial number does not correspond to any of my records on the safari bolt action rifles.It should have a prefix or suffix to the serial number.The only time this was not used was for the year 1959.Your rifle could have been made that year.
Good luck. I would try gun shops, gun shows, want ads, Shotgun News to start.