designations when selecting a proper tube for your BT-99, as your
new shotgun is unsuitable for any hunting use.
CONVENTIONALLY CHOKED BARRELS
If you have a BT-99 with a conventionally choked barrel it is also easy
to determine choke constriction. Constriction of conventionally
choked barrels is shown with a neat, clearly defined mark found at
the chamber end of the barrel, on the left side surface of the polished
barrel lug. The coding is as follows:
MARKING ON LEFT BARREL LUG OF A AMOUNT
CONVENTIONALLY CHOKED BARREL OF CHOKE
* Full Choke
*- Improved Modified
** Modified
To determine the choke of an Invector tube see the section titled
“Invector-Plus™ Choke Tube System” above.
CLEANING SUGGESTIONS
The BT-99 is a target gun, and as such will function better and more
reliably over a longer period of time if it is properly maintained and
kept clean.
BEFORE PERFORMING ANY CLEANING PROCEDURES, ALWAYS MAKE
CERTAIN THERE IS NO SHELL IN THE CHAMBER.
You should clean your BT-99 after every day of shooting, and more
often if it becomes excessively dirty. A minimum cleaning includes
wiping down the action and oiling key parts. Most regular mainte-
nance will also include cleaning the barrel. If you encounter a function
problem (tight action when closing, etc.), be sure to give your gun a
thorough cleaning to see if it solves the problem before seeking the
services of a Browning Recommended Service Center or the Browning
Service Facility in Arnold, Missouri, or a competent gunsmith.
A light cleaning means oiling and wiping down. It can be accom-
plished with the barrel still attached. A full cleaning requires that you
remove the barrel and forearm. To clean your firearm follow the
general outline below:
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