Available Benelli choke tubes are Cylinder, Improved Cylinder, Modified, Improved Modified, Full, and Extra Full Turkey.
* Full *- Improved Modified ** Modified **- Improved Cylinder **$ Skeet *** Cylinder Bore
M=MODIFIED IC=IMPROVED CYLINDER S=SKEET F=FULL Also, as stamped on receiver: * Full *- Improved Modified ** Modified **- Improved Cylinder **$ Skeet *** Cylinder Bore
from smallest pattern to largest: full improved modified modified improved cylinder cylinder (no choke)
Browning Choke Markings "* " = full "*- " = improved modified "** " = modified "**-" = improved cylinder "**$" = skeet "***" = cylinder
Extra Full, Full, Improved Modified, Modified, Improved Cylinder, Cylinder, Skeet
ONE = Full TWO = Improved Modified THREE = Modified FOUR = Improved Cylinder FIVE = Cylinder
Modified is a smaller, tighter pattern than improved cylinder. Basically, the slope in a modified choke tube is steeper than an improved cylinder choke tube.
Improved cylinder
ONE = Full TWO = Improved Modified THREE = Modified FOUR = Improved Cylinder FIVE = Cylinder
Slugs will shoot safely through any choke but Improved cylinder or full cylinder should work.
Improved cylinder will be fine.