You will have to contact Browning to find out.
No
.020
Most were full choke, but the only accurate to determine the choke is to measure the inside diameter of the muzzle with a caliper. www.countrygunsmith.net
Bridge gun company 16 ga choke
If it was made to shoot steel shot and has interchangeable chokes.
My great-grandmother gave me her's and she purchased her's in 1949.
The Stevens model 77f 16 gauge pump shotgun with a 2 3/4 chamber, full choke, no serial number, is valued at between $75 and $125. They were made from 1954 to 1969.
depending on the condition 100.00 to 250.00.
25-125 depending on condition.
$100-$150. sales@countrygunsmith.net
1957 more likely 1961