the barrel is narrowed at the muzel for a tighter shot pattern.
Modified Choke
no, the improved modified is between a full choke and a modified choke check out this website http://www.wildfowlmag.com/tips_strategies/shotgun_062304/
Modified describes a choke. Invector is a system of choke tubes.
# They relate to choke type, i.e., full, modified....
It stands for Modified choke.
it is part of the choke codes. '*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).
Browning Choke Markings "* " = full "*- " = improved modified "** " = modified "**-" = improved cylinder "**$" = skeet "***" = cylinder
from smallest pattern to largest: full improved modified modified improved cylinder cylinder (no choke)
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.
In both the U.S. and British scale of chokes, Full choke is the tightest choke for game guns (there are some "extra tight" chokes but these are generally for other thsan game guns). The English 3/4 (three quarter) choke is equivalent to the U.S. "Improved Modified" The English 1/2 (quarter ) choke is equivant to the U.S. "modified" In other words the Mod choke is one half the tightness of a full choke and a the Improved Modified is three quarters the tightness of a full choke.
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.
'*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).