Owner`s manual

28
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Invector choke tubes are compatible with factory ammunition that has
been loaded in compliance with SAAMI specifications, including
magnum lead and steel shot loads, sabots and shotgun slug loads.
Replacement and additional tubes and wrenches are available from
your Browning dealer, or by contacting the Browning Customer
Service Department at [phone].
CHOKE TUBE SELECTION
To help you choose the correct choke tube for each hunting
and shooting situation, all Browning Invector choke tubes are
inscribed on the side with the patterns they produce with both
lead and steel shot. Each Invector tube also has notches in the
top rim of the tube (Figure 18, page 29). These notches are a code
to allow you to determine the choke designation while the tube is
installed. Rim notches refer specifically to lead shot. You will need to
use the charts on page 29 to cross-reference from lead to steel, and
determine the appropriate tube for your ammunition and hunting/
shooting situation.
Several choke tubes are supplied with your shotgun. The choke tubes
listed are also available as accessories. Remember, Standard Invector
and Invector-Plus tubes are not interchangeable. Invector-Plus tubes
are for Browning shotguns with back-bored barrels only. Before
removing or installing tubes, or reading the rim notch code, make
sure your shotgun is completely unloaded.
CHOKE TUBE REMOVAL
1 Place the “safety” in the on safe position. Always make sure the
shotgun is completely unloaded. Always keep the muzzle pointed
in a safe direction.
2 Use the choke tube wrench to loosen the tube, turning it
counterclockwise (Figure 19, page 30). Finger-twist the tube
the rest of the way out of the barrel.
figure 18
NO NOTCHES
FIVE NOTCHES
FOUR NOTCHES
THREE NOTCHES
TWO NOTCHES
ONE NOTCH
RIM
NOTCHES
PATTERN WITH
LEAD SHOT
PATTERN WITH
STEEL SHOT
extended** x-full turkey **
i full *
ii imp. modified
full
1
iii modified
full
1
iiii imp. cylinder modified
iiiii skeet imp. cylinder
no notches cylinder cylinder
*
Not for use with steel shot. Using an over-tight choke constriction with
steel shot will result in an ineffective “blown” pattern.
**
Extra Full Special, extended with ports. Do not use with steel shot.
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.
08-121-BFA_Maxus OM.indd 28-29 6/22/09 2:59:58 PM