Owner's Manual

17
INTERCHANGEABLE CHOKE SYSTEM
Pre-1983 BPS models are conventionally choked. Most current BPS
shotguns have barrels that are threaded to accept the Browning
Invector™ choke tube system. You may confirm this by glancing on
the right side of your barrel where the specifications are inscribed.
The degree of choke in the tube is indicated twice on each choke tube:
inscribed on the side of the tube, and with a “notch” code on the
top rim of the tube (Figure 10A). Invector choke tubes are made
with tempered steel and are fully compatible with all FACTORY
AMMUNITION (loaded in compliance with SAAMI specifications)
including Magnum lead and steel shot loads and rifled slug loads.
STANDARD INVECTOR™
Pre-1993 BPS models, excluding the 12 gauge 3
1
⁄2" magnum, are
threaded to accept Standard Invector
™
choke tubes. The 10 gauge,
28 gauge and .410 bore BPS are also the Standard Invector choke
tube system.
INVECTOR-PLUS™
All current BPS 12 and 20 gauge shotguns, except the Deer gun, have
back-bored barrels and are threaded to accept Invector-Plus™ choke
tubes only. The word INVECTOR-PLUS denotes that the barrel is
threaded. The degree of choke in the tube is indicated twice on each
choke tube: inscribed on the side of the tube, and indicated with a
“notch” code on the top rim of the tube. All Invector-Plus choke tubes
are made with tempered steel and are fully compatible with all
FACTORY AMMUNITION (loaded in compliance with SAAMI
specifications) including magnum lead and steel shot loads and rifled
slug loads. Our universal tube wrench is used to remove and install
these tubes.
CAUTION: INVECTOR-PLUS
™
TUBES ARE FOR USE IN BROWNING
SHOTGUNS WITH BACK-BORED BARRELS ONLY AND ARE NOT
INTERCHANGEABLE WITH STANDARD INVECTOR
™
CHOKE TUBES. DO NOT
USE INVECTOR-PLUS TUBES IN BARRELS THREADED FOR STANDARD
INVECTOR TUBES. DO NOT USE STANDARD INVECTOR TUBES IN BARRELS
03-241-BFA-BPS OM w-Duratouch 5/11/05 4:21 PM Page 17