To determine different shot patterns
Only with cylinder and improved cylinder choke tubes.
Full choke for all buck shot.
Yes, all Browning Invector and invector plus barrels can shoot steel shot.
System of changable shotgun choke tubes made by Mossberg. Accu Choke is their brand name. A shotgun choke is a means of reducing the bore size at the muzzle of a shotgun, to produce shot patterns that spread to a greater or lesser degree.
A choke, as it relates to firearms, is a narrowing of the end of the shotgun barrel. This narrowing can be greater or smaller. Chokes that are smaller than the bore to a greater degree are called tight chokes. Choke affects the shot pattern. Different chokes act differently with different loads and shot types. Choke tubes are steel tubes with threads on the outside and one end having the same diameter as the bore and the other end being narrower to various degrees. These tubes are screwed into the end of the shotgun barrel to vary the choke. This provides shooters with more flexibility in using their guns for different types of shooting and different loads.
You use the choke tube which is appropriate to the use of the shotgun. Choke tubes are short sections of tube which screws into the muzzle end of the shotgun barrel. Different tubes hve different amounts of constriction (full, modified, improved, cylinder bore, etc). The tighter the constriction, the more the shot column is kept together and thus the more dense the shot column. This keeps the column together longer as it flies down range and thus will put more pellets into the target. Tighter shot column also means that the pattern doesn't spread out as much and thus it's harder to hit a given target.
Either a full choke,or extra full choke shotgun barrel.
That will depend on whether the choke tube is rated for steel shot or not.
No, you do not want to shoot Black Cloud Ammunition through a wad constricting choke tube. With any factory choke you will be fine, otherwise companys like Patternmaster Choke Tubes make a choke specially for Black Cloud.
stoeger 410's are made in Brazil
You can use steel shot with a choke anywhere from cylinder to modified, i wouldn't recommend using steel with a improved modified or a full choke.
use lead only steel chokes are specified on the choke as steel of lead shot