User Guide

or use the identification mark(s) located on the

top rim of each tube (See Figure 20).

INVECTOR TUBE SELECTION

This chart shows lead/steel choke constriction

designations for each Invector tube within each

gauge. Designation is listed lead first, then steel:

for example, M/F means a certain tube shoots

Modified with lead shot and Full with steel shot.

Tubes listed are also available as accessories.

RIM NOTCHES

I II III IIII IIIII (none)

12 Gauge Lead/Steel XF/** F/* IM/F† M/F† IC/M S/IC† C/IC†

Tube Code: XF-Extra Full, F—Full, IM-Improved Modified, M-Modified,

IC-Improved Cylinder, S-Skeet, C-Cylinder.

*Do not use with steel shot. Using an over-tight choke constriction with

steel shot will result in an ineffective, “blown” pattern.

**Extra Full Special with knurled rim and no rim code. Do not use with

steel shot.

†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 shot loads.