Owner's Manual

Available 20 Gauge Invector-Plus tubes for back bored barrels:
RIM NOTCHES PATTERN WITH PATTERN WITH
LEAD SHOT STEEL SHOT
I Full Full
III Modified Imp. Modified
IIII Imp. Cylinder Modified
1
IIIII Skeet Modified
1
No notches Cylinder Imp. Cylinder
1
When more than one choke designation is listed for a given steel shot
pattern, use the more open choke listed for high velocity, larger shot
size steel loads.
Available 12 Gauge Invector-Plus tubes for back bored barrels:
RIM NOTCHES CHOKE DESIGNATION CHOKE DESIGNATION
WITH LEAD WITH STEEL
X on side of tube X-Full Special
*
IFull
**
II Improved Modified Full
III Modified Improved Modified
IIII Improved Cylinder Modified
IIIII Skeet Improved Cylinder
No notches Cylinder Cylinder
*Extra Full Special with knurled rim. Do not use with steel shot.
**Do not use with steel shot. Using an over-tight choke constriction
with steel shot will result in an ineffective, “blown” pattern.
Note: When more than one choke designation is listed for a given steel
shot pattern, use the more open choke listed for high velocity, larger
shot size steel loads.
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