User's Manual

10 | OPERATING INSTRUCTIONS
USE OF THE “CHOKES” (FOR MODEL EQUIPPED WITH MOBILE CHOKES ONLY)
WARNING:
• MAKE SURE THE SHOTGUN IS UNLOADED AND THE SAFETY “ON” BEFORE YOU
ASSEMBLE/DISASSEBLE THE CHOKES.
• UNDER SAFETY CONDITIONS (CARTRIDGE CHAMBER EMPTY, RECEIVER EMPTY, MAGAZINE TUBE
EMPTY, SAFETY ENGAGED), CHECK WHETHER THE CHOKE WORKED LOOSE DURING USE. IN SUCH
A CASE, THE CHOKE MUST BE TIGHTENED TO THE END BY MEANS OF THE CHOKE WRENCH.
ASSEMBLY & DISASSEMBLY OF THE INNER CHOKES:
• TAKE ONE OF THE INNER CHOKES OF YOUR CHOICE. PLACE IT INSIDE BARREL AND BY MEANS OF
CHOKE WRENCH; SCREW (CLOCKWISE) IT TO THE END UNTIL IT IS COMPLETELY TIGHTENED.
• TO DISASSEMBLE, UNSCREW (COUNTER-CLOCKWISE) BY MEANS OF CHOKE WRENCH AND
REMOVE IT.
There are 5 different screw-in (inner) chokes that can be
used on your shotgun.
• F (Full /)
• IM (Improved Modified //)
• M (Modified ///)
• IC (Improved Cylinder ////)
• Cyl-Skeet (Cylinder Skeet /////)
Your shotgun is packed with either 3-choke system or
5-choke system. Most common and preferred 3-choke
system is F, M, IC chokes. however different
combination
3-choke systems are possible depending on the
requirements of different countries.
5-choke system contains all the inner chokes being F,
IM, M, IC, Cyl-Skeet.
Check the number and marking on the chokes to find
out the inner choke configuration of your shotgun.
All screw-in(inner) chokes have one, two, three, four or
five notches, which indicate the type of the screw-in
choke, i.e. F choke has one, IM has two, M has three, IC
has four and Cyl-Skeet has five notches. Please also
check the markings on chokes.
NOTE:
M, IC and Cyl-Skeet choke tubes are good for steel shot.
F & IM choke tubes are for lead shot only.
Above table shows the constriction & pattern percentage versus inner chokes. Pattern
percentages are taken at a distance of 36.5 meters (40 yards). The number of pelletes striking
within a 76mm (30 inch) circle, drawn so as to encompass as many pellet holes as possible, is
counted and compared with the number of pelletes contained in an identical unfired shell. The
result is expressed as a percentage.
As can be seen from above table Full inner choke has the most accuracy and accuracy
decreases from Full to Cyl-Skeet inner choke which has the least accuracy. Expansion of the
shot pellets within a distance is the least in full inner choke and it is the most in Cylinder-Skeet
inner choke.
Choke Pattern Percentage
Choke Constriction (12 Gauge)
Pattern Percentage
Cylinder-Skeet
Improved Cylinder
Modified
Improved Modified
Full
0 - 0.005” (0 - 0.12 mm) 40% - 53%
57%
67%
73%
75%
0.010” (0.25 mm)
0.020” (0.50 mm)
0.030” (0.75 mm)
0.040” (1.0 mm)