Try the blue book of gun values, on line auction sites, a gun shop or gun show.
300 USD
100-10000 USD depending on specifics
100-500 or so
AFAIK, no one has tried to make an AR upper in 7mm Magnum
100-500 USD or so
Sako, and Remington are two different manufacturers.
100-10000 USD depending on specifics
NO!!
Need to know if it's a bolt action or a semi-auto.
Browning did not make the Model 70, Winchester did. Also, the serial number is not a valid Browning serial number for a 7mm Magnum rifle. Please doublecheck your information.
500-700 or so
7mm Magnum and 300 Winchester Magnum