I have a wards-westernfield 20 g pump, full choke, These guns were manufactured by Stevens-Savage for MW. Mine was handed down to me by my father and was purchased in 1945. So it's at least that old, 64 years. Hope this helps.
To determine the choke on a Westernfield Model 155A shotgun, you can look for markings on the barrel, which may indicate the choke type (such as "IC" for Improved Cylinder, "M" for Modified, or "F" for Full). If there are no markings, you can perform a choke gauge test using a choke gauge tool or a caliper to measure the constriction at the muzzle. Alternatively, you can pattern the shotgun using different loads and see how the shot spreads to infer the choke type.
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.
Look for the symbol on the barrel from the codes below '*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).
Notches on the Choke TubeMost standard choke tubes have notches on their ends. The notches can be used to identity your choke tube, but they can be difficult to see. The following list shows what kind of choke the number of notches designate:1. One notch is a Full choke. (/)2. Two notches is an Improved Modified choke (//)3. Three notches is a Modified choke (///)4. Four notches is an Improved Cylinder choke (////)5. Five notches is a Skeet (or Cylinder) choke (/////)
from smallest pattern to largest: full improved modified modified improved cylinder cylinder (no choke)
You can use steel shot with a choke anywhere from cylinder to modified, i wouldn't recommend using steel with a improved modified or a full choke.
In both the U.S. and British scale of chokes, Full choke is the tightest choke for game guns (there are some "extra tight" chokes but these are generally for other thsan game guns). The English 3/4 (three quarter) choke is equivalent to the U.S. "Improved Modified" The English 1/2 (quarter ) choke is equivant to the U.S. "modified" In other words the Mod choke is one half the tightness of a full choke and a the Improved Modified is three quarters the tightness of a full choke.
Modified is a smaller, tighter pattern than improved cylinder. Basically, the slope in a modified choke tube is steeper than an improved cylinder choke tube.
If you are looking at a Browning shotgun, the two asterisks indicat Modified Choke.
'*' designates full choke (F). '*-' designates improved modified choke (IM). '**' designates modified choke (M). '**-' designates improved cylinder choke (IC). '**$' designates skeet (SK). '***' designates cylinder bore (CYL).
'*' 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).