Without any more information, you question is almost impossible to answer with any real degree of accuracy. Value will depend on where you live, how bad you want to sell it, condition, finish, accessories, box, papers, engraving,barrel length, detailed description of all markings, stock wood, etc.. You could be in the 50-300 USD range.
No way to price a weapon with just the serial number and no description.
Assuming that you have a Browning safari grade bolt action rifle which is chambered in a standard caliber(270 Win.) the value of your rifle with a original finish between 60%-90% is 550 -1175 dollars.Your 6L prefix to the serial number indicates that your rifle was made by FN of Belguim for Browning in 1966.This was during a time when FN used salt to cure and age the stock wood quickly.This caused the firearms to rust under the stock line!If yours has this problem then the value would be diminished quite a bit,
Without a better description, 300-900
Impossible to do with just the serial number.
Need a detailed description
The W818878 is not recognized. 70B30095 is a number for a Browning Lever action .22 rifle. Use the link to find value
Can't value with just the sn.
There is no such thing as a Browning semiautomatic M70 rifle. The Model 70 bolt-action rifle was produced by Winchester, while Browning produced a very different semiautomatic rifle called the BAR. Which is it?
There is no way of knowing without you providing the Model of Browning rifle that you own,its caliber,and a good description of your rifles overall condition.
Need a detailed description
100-1000 usd
100-1000 usd