Almost certainly it does. Most common would be full/modified, though some were made (I believe) in modified/improved cylinder. There have been a few that are cylinder bore right from the factory, or so I have been told. These would be "coach guns", which most often have short barrels. Choke is a relationship of the inside muzzle diameter to the inside diameter of the rest of the barrel. A choke guage, commonly found at any gun shop can give you an idea of the choking, but because it is based upon an educated guess, it is not perfect. A gunsmith can measure the inside diameters and make a determination for you, but the best way is to actually take the gun to a range and pattern it. Bear in mind that the choke is only one aspect of pattern determination... a most important aspect, but only one. Other factors are size of shot, brand of shell, type of shot, type of powder and other factors not yet well understood by man. I don't think I have ever seen a Savage/Stevens 311 that is actually marked as to what choke the barrels have. There is also the possibility that the choke(s) was modified as the 311 series has been out of production for a while now. My suggestion is to take it out and shoot it to see how it performs.
It's called a choke, and restricts the bore a few hundredths of an inch. Most are round, for hunting, but there are some called "duckbills" that spread the shot laterally for combat purposes, though they're not popular anymore because they didn't offer a significant advantage. There are fixed chokes, permanently part of the barrel. There are adjustable chokes, which turn to constrict. There are removable chokes, which set in place with a wrench.
Introduced in 1973, the Citori was the first Japanese made Browning. Fixed chokes were the only option until the Invector choke became available in 1983. The fixed chokes and Invectors were both available on the Citori for a few years until in 1989 when the Invector became standard on all guages except the 28ga and .410.
KBI is the importer. Is the Baikal an over&under or a side-by-side? Screw-in chokes or fixed? Extractors or ejectors? Chrome lined bores? Any engraving or inlaying?
0-250 USD depending on condition.
It hasn't happend yet. You can custom order one to this day.
Yes,you should be able to have a qualified gunsmith do the work for you.I would check out the area in which you live and find a qualified gunsmith perform the work for you.
No, it's a 2nd class lever.
No way to answer without knowing barrel length and gauge.
Are you talking about an Auto 5 Light Weight? What is the barrel length? Fixed or tube chokes? Finish? Type of wood? Any engraving? Any accessories? How old? All of the above affect value. A broad range (common to high end) would be @ 500-5000.
Requires a gunsmith to look at it.
NOT RECOMMENDED unless you are in a life or death situation.
The double triggers and fixed chokes hurt resale some. $400 is realistic.