Your Browning Sweet 16 is a 16 gauge shotgun that can handle shells that are 2 and 3/4 inches in length. You might also purchase 2.5 inch shells for this shotgun.
Yes, if so marked
It was made in 1954 and is chambered for 2 3/4" 16 ga shells.
Not sure excactly what the question is. All Browning Sweet Sixteens (imported to Browning) after WWII are chambered for 2 3/4 16ga shells. The barrels are mared as such. Prior to 1941, Sweet 16's and Standard 16's were chambered for 2 9/16" shells.
13-14"
The only way to know is to shoot and adjust
The Sweet Sixteen Shotguns were a model of the Browning A-5 Auto. They were made between 1937 and 1975. That does not appear to be a complete serial number.
They were made in 24". 26", 28" and 30"
Brownings made prior to the Second World War could have been chambered in 16 ga, 2-9/16" length. That is no longer a standard SAAMI length and I know of no US companies who load it. You may be able to find a hand loader who can make them for you, you can investigate the European cartridge companies to see if there is a European equivalent, or you can have the gun converted to shoot the longer 2-3/4" shells.
It was made in early 1947. One of the first to be chambered for 2 3/4" shells.
No way to answer without a sn, condition and bbl length.
Brazil nuts
the tabour makes a very deep sound due to the length of the strings,as well a very sweet sound