You first need to identify the actual manufacturer since JC Higgins was a brand name used by Sears to market numerous manufacturer's guns including Winchester, High Standard, Marlin, and others.
A barrel with a full choke.
No
Either a full choke,or extra full choke shotgun barrel.
The choke you use depends on your target rather than the type of shotgun. For example: if you are shooting skeet, you would use improved or modified cylinder, but if you are shooting trap, you would use full choke.
You don't give us the model, so it is hard to answer the question. Assuming the gun does not have an obvious adjustable choke, the choke is probably not easily adjustable. A gunsmith can open the choke (from Full to Modified for example) or can install internal interchangeable choke tubes (costs around $125).
Extra full
# They relate to choke type, i.e., full, modified....
The correct answer is Super full.
not at all
4 notches = cylinder choke (open), and one notch = full choke (tight)
With standard chokes, Full Choke is the tightest. However, there are non-standard chokes for SOME shotguns (used by turkey hunters) that are Extra Full Choke.
With standard chokes, Full Choke is the tightest. However, there are non-standard chokes for SOME shotguns (used by turkey hunters) that are Extra Full Choke.