In order to answer your question,I will need more info.First is the firearm in question a bolt action rifle or a semi-auto.Second the caliber is 264 Win mag.not the model number,Is there a model number on your firearm?Third is there any reference to Browning on your firearm.The reason I ask is that the L prefix may be a indication you have a Browning safari bolt action rifle?If you can answer these for me they will help me identify your rifle and then we can establish a reasonable date of manufacture.
The winchester model 670,and magnum models were made from 1967-1973.
No, it is/was not.
your winchester model 70 was made by winchester in 1972.
Winchester Model 94-44 Magnum 3199687M
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.
Winchester did not make a model 77.Could you mean model 70?,or do you refer to the ruger model 77?
Your winchester model 9422 magnum 22cal.rifle was made by winchester in 1978.
1965
yes.The Winchester model 9422M was chambered in .22WMR.
With the serial number that you have provided,your Winchester model 9422M was made in the year 1980.
With the serial number you provided,your Winchester model 9422M was made in the year 1977.
With bthe serial number that you have provided,your Winchester model 9422M was made in the year 1975.