What are some of the differences in Browning choke tubes?

What are some of the differences in Browning choke tubes?

The Invector, or ""Standard Invector" system" was introduced in 1983. A few years later, the Invector-Plus chokes were introduced to fit the new back-bored shotgun barrels. These two choke systems will not interchange. Several newer Browning shotguns now utilize the Invector-DS choke tube system. This is a technolgy leap in performance. Since it utilizes new design parameters, Invector-DS choke tubes are not compatible with any other Browning choke tubes. 

If you have screw-in chokes in your shotgun barrel, the kind of system you have will be stamped on the barrel near the receiver. You must use the proper choke system for your shotgun.

A partial listing and design overview for many Browning choke tubes is found below. Some newer/specialty models may not be represented. 

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Choke Tubes
Choke Tubes

 MIDAS GRADE EXTENDED:

  • Extend beyond the end of barrel for easy removal and installation
  • Stainless steel with black oxide finish
  • Laser-etched gold accent band
  • Minimum gap geometry plus high-resolution “RMS” finish reduce buildup of plastics in the shotgun bore
  • Invector-Plus™ long taper choke tube technology
  • Browning Midas™ Grade choke tubes produce tighter patterns than Browning Invector-Plus™ choke tubes

DIAMOND GRADE EXTENDED:

  • Longer choke taper inside Invector-Plus™ choke tubes for use with back-bored barrels
  • Matching tubes for the Citori 625
  • 17-4 stainless steel construction
  • Absolutely perfect concentricity for superior patterning
  • Diamond-cut knurling extends beyond the end of the barrel for easy removal and installation
  • Titanium nitride finish with black accent band
  • Browning Diamond Grade choke tubes produce tighter patterns than Browning Invector-Plus™ choke tubes

 DIANA GRADE EXTENDED:

  • Longer choke taper inside Invector-Plus™ choke tubes for back-bored barrels
  • Stainless steel barstock is heat treated prior to machining
  • Titanium nitride surface 72HRC hardness for excellent wear and reduced plastic build-up
  • Absolutely perfect concentricity for superior patterning
  • Extends beyond the barrel for easy removal and installation
  • Browning Diana Grade choke tubes produce tighter patterns than Browning Invector-Plus™ choke tubes

INVECTOR PLUS EXTENDED:

  • Invector-Plus™ extended tubes are constructed of highly polished, 17-4 stainless steel for the ultimate in performance and durability
  • Available in constrictions ranging from Skeet to Full
  • Knurled portion extends beyond the barrel for easy removal and installation
  • Longer choke taper inside Invector-Plus choke tubes for back-bored barrels
  • Produces excellent patterns with excellent uniform densities
  • All Browning tubes are set to industry constriction standards

EXPRESS SABOT RIFLED CHOKE TUBE:

  • Stainless steel with black oxide finish
  • Extremely effective with both sabot and Foster slugs
  • Threaded for 12 gauge Invector-Plus™ back-bored barrels
  • Invector-Plus™ only

FULL STRUT TURKEY CHOKE TUBE:

  • Stainless steel with black oxide finish
  • Camo band
  • Directional porting
  • Designed for optimal performance with #4, #5 and #6 shot
  • Invector-Plus™ only

INVECTOR-DS, FLUSH FIT:

  • Fit flush with the end of the barrel but are longer than competitors’ tubes
  • Proprietary differential banded gas seal eliminates residue build up and makes chokes easy to remove and install
  • Integrated spring suspension holds the seal tight, yet allows expansion against the barrel wall for a perfect fit and a smooth transition for the shot column entering the choke
  • Gas is controlled at the interface between choke and where it seats in the bore
  • From skeet to full choke, patterns tighten consistently and reliably

INVECTOR-DS EXTENDED:

  • Extends beyond end of barrel for easy removal and even tighter patterns
  • Proprietary differential banded gas seal eliminates residue build up and makes chokes easy to remove and install
  • Integrated spring suspension holds the seal tight, yet allows expansion against the barrel wall for a perfect fit and a smooth transition for the shot column entering the choke
  • Gas is controlled at the interface between choke and where it seats in the bore
  • From skeet to full choke, patterns tighten consistently and reliably

GRAND PASSAGE EXTENDED:

  • Mossy Oak® Duck Blind® camo band
  • Stainless steel with black oxide finish
  • Superior patterning
  • Threaded for 12 gauge Invector-Plus™ back-bored barrels only
  • Browning Grand Passage extended choke tubes produce tighter patterns than Browning Invector-Plus™ choke tubes
  • Timber n’ Teal model is helically spun to spin shot making it excellent for tight timber, teal and close range shooting

WICKED WING (FORMERLY DIRTY BIRD) EXTENDED:

  • Invector-Plus Dirty Bird choke tubes are available in three constrictions for close, medium and long range shooting
  • Specifically designed for steel shot, particularly Winchester® Blind Side® ammunition
  • Longer choke taper inside Invector-Plus choke tubes for use with back-bored barrels
  • Constructed of 17-4 stainless steel for the ultimate in performance and durability
  • Two pack comes with Long and Close Range tubes
  • Long Range tube produces a 70% pattern
  • Medium Range tube produces a 50% pattern
  • Close Range tube produces a 30% pattern

INVECTOR PLUS:

  • Invector-Plus™ tubes are available in constrictions ranging from Cylinder to Extra-Full
  • Longer choke taper inside Invector-Plus choke tubes for use with back-bored barrels
  • Produces excellent patterns with excellent uniform densities
  • All Browning tubes are set to industry constriction standards
  • Flush fit does not extend beyond end of barrel
  • Constructed of highly polished, 17-4 stainless steel for the ultimate in performance and durability

STANDARD INVECTOR CHOKE TUBES:

  • Standard Invector™ tubes are available in constrictions ranging from Cylinder to Extra-Full
  • Produces excellent patterns with excellent uniform densities
  • All Browning tubes are set to industry constriction standards
  • Flush fit does not extend beyond end of barrel
  • Constructed of highly polished, 17-4 stainless steel for the ultimate in performance and durability