With the serial number that you have provided,your Winchester model 70 bolt action rifle was made in the year 1982.
1937
Made in 1955. DC
1873
Mid to late mid 80's
@ 1950
Try Proofhouse.com sn tables.
M70 means it was made in 1970
1956
Browning does not make a M70 semi auto 7mm nag
Made in 1970, what is your question?
The first serial number in 1968 was 869001; 56908 were made that year. The first serial number in 1969 was 925909; 15992 were made that year. The first serial number in 1970 was 941901. G prefixing started after 1968
Winchester M70 .30-06