A choke tube is a removable interior tube at the end of a shotgun barrel that controls shot dispersion. Choke tubes typically come in cylinder, improved cylinder, modified, improved modified, full, and extra full.
A cylinder choke tube produces a very wide shot dispersion, whereas an extra full choke tube will provide a much tighter shot pattern. Different chokes are used for skeet, trap, and sporting clays.
In hunting, the type of game and conditions will determine choke tube type.
The current system of screw in choke tubes was introduced in 1959 by Winchester with its model 59 semi-automatic shotgun.
They discontinued the model 59 in 1965 to make way for their new line of shotguns: The Model 1400 semi-automatic and the Model 1200 pump. They were introduced as fixed choke guns and it wasn’t until around 1970 they had worked out some problems with their screw in choke system they then offered this in the 1400 and 1200 model shotguns they named their new choke tube system winchoke.
In 1978 the Mossberg 500 was first seen sporting the new choke tube system they named their new system accuchoke.
In 1982 Weatherby introduced the model 82 with the new screw in choke system they named their new choke tube system multichoke.
After this, all the shotgun manufacturers introduced their own versions and systems of screw in choke tubes.
Choke tube selection is a confusing issue among a lot of shotgunners but one that is easily explained. Everyone knows how to pattern a shotgun and what they are looking for, which is the ultimate full choke pattern at 40 yards, which is a 70% shot pattern, it is this area where it all gets fuzzy and needs explaining.
The reason for placing 70% of the shot in a 30″ circle at 40 yards for a full choke is this, the minimum – maximum pattern kill zone, this means the pattern will cleanly kill anything in this circular zone.
Selecting the correct choke tube is nothing more than moving that same exact pattern to different yardages in other words if you want to shoot at a target 20 yards away then select a choke tube that gives you 70% of the pattern in a 30″ circle at 20 yards, if shooting at a target that is 45 yards away then select a choke tube that will give you 70% of the pattern in a 30″ circle at 45 yards.
Extra Full Choke Tube delivers a 70% pattern at 45 yds.
Full Choke Tube delivers a 70% pattern at 40 yds.
Modified Choke Tube delivers a 70% pattern at 35 yds.
Improved Cylinder Choke Tube delivers a 70% pattern at 30 yds.
Cylinder Choke Tube delivers a 70% pattern at 25 yds.
Click here for shotgun pattern improvement.
|Choke Tubes And Thread Specifications:|
|Manufacturer And Type||Gauge||Diameter||Threads Per Inch|
|Browning Invector plus||12||.820||32|
|Hastings choke II barrels||12||.817||1mm|
|Choke Tube Interchange Guide:|
|American Arms||Interchanges with||Fausti/Traditions shotguns style choke tubes|
|Austin & Halleck Black Powder Shotgun||Interchanges with||Winchester, Moss. 500 choke tubes|
|Baikal/European American Arms||Interchanges with||Standard Tru Choke style choke tubes|
|Benelli (Current production-square choke tubes)||Interchanges with||Beretta style choke tubes|
|Benelli Crio||Interchanges with||Sport II and SuperSport and Cordoba Produced prior to 2006|
|Benelli Crio Plus||Interchanges with||Super Black Eagle 2, M-2, Ultra Light and current Sport II, Super Sport & Cordoba|
|Benelli M-4||Interchanges with||Ber/Ben standard choke tubes|
|Beretta (Current Production)||Interchanges with||Beretta style choke tubes|
|Beretta Optima||Interchanges with||Optima choke tubes (Models 391A Extrema & 12ga. 391 Teknys) Silver Pigeon II & III|
|Beretta Optima Plus||Interchanges with||Optima Plus choke tubes (Models 391A Extrema and 12ga. 391 Teknys)|
|Black Diamond 12ga||Interchanges with||Ber/Ben standard choke tubes|
|Browning Invector||Interchanges with||Winchester, Moss 500, Weatherby, Maverick 88, S&W and Savage Guns style choke tubes|
|Browning Invector Plus||Interchanges with||Browning Invector Plus, Winchester Super X2 and Winchester Supreme style choke tubes|
|BSA||Interchanges with||Beretta/Benelli choke tubes|
|BSA 20ga Silver Eagle||Interchanges with||Serial #201836 or higher is Ber/Ben if serial number is below, Huglu choke tubes|
|Caeser Guerini||Interchanges with||Fab Arms|
|Century Arms/Kahn Centurion & Arthemis 12ga||Interchanges with||Berretta/Benelli|
|Century Arms/Kahn Centurion & Arthemis 20ga||Interchanges with||Huglu style choke tubes|
|Charles Daly Current Production Pumps, semi-autos, & Model 206||Interchanges with||Remington Style choke tubes|
|Charles Daly Current Production O/U||Interchanges with||Winchester style choke tubes|
|Charles Daly S/S Field II, Model 306, & Model 106||Interchanges with||Beretta/Benelli style choke tubes|
|Churchhill 12ga||Interchanges with||Fabarm style choke tubes, some models American Arms Style choke tubes|
|CZ USA 12ga||Interchanges with||standard Beretta/Benelli choke tubes|
|CZ USA 20ga||Interchanges with||Huglu style choke tubes|
|DeHaans 12ga||Interchanges with||Ber/Ben style choke tubes|
|DeHaans 20ga||Interchanges with||Huglu style choke tubes|
|Fabarm 12ga||Interchanges with||Fabarm style choke tubes|
|F.A.I.R. (I Rizzini)||Interchanges with||Verona LX choke tubes|
|Franchi (Current production-square choke tubes)||Interchanges with||Beretta/Benelli style choke tubes|
|Franchi (Old Style-v choke tubes) Pre 1999 Models||Interchanges with||Fran Choke style choke tubes|
|H&R 1871/N.E.F. 12ga & 20ga||Interchanges with||Winchester, Moss 500 etc. choke tubes|
|H&R Pardner Pump||Interchanges with||Winchester, Moss 500 etc. choke tubes|
|H&R Excell Auto 5||Interchanges with||Verona SX choke tubes|
|Hastings Choke Tube 1 (Old Style)||Interchanges with||Tru-Choke|
|Huglu 12ga||Interchanges with||Beretta/Benelli style choke tubes|
|Huglu 20ga||Interchanges with||Huglu|
|Ithaca (Old Style-Fine choke tubes)||Interchanges with||Tru-Choke style choke tubes|
|Ithaca (New Style 12ga.)||Interchanges with||Winchester style choke tubes|
|Ithaca (All New Style 20ga.)||Interchanges with||Tru Choke style choke tubes|
|Lanber 12ga||Interchanges with||Lanber style choke tubes|
|Lanber Imported by American Arms||Interchanges with||American Arms style choke tubes|
|Laurona (O/U)||Interchanges with||American Arms style choke tubes|
|LC Smith 20ga (Marlin)||Interchanges with||Fran Choke choke tubes|
|Legacy Sports Escort & Pointer 12ga||Interchanges with||Ber/Ben standard choke tubes|
|Legacy Sports Escort 20ga||Interchanges with||Huglu style choke tubes|
|Marrochi Golden Snip Field O/U||Interchanges with||Browning Invector Plus style choke tubes|
|Maverick Model 88||Interchanges with||Mossberg 500, Winchester, and Browning Invector style choke tubes|
|Miroku||Interchanges with||Winchester style choke tubes|
|Mossberg 500 & 535||Interchanges with||Winchester, Weatherby, Browning Invector|
|Mossberg 835, 935 & 9200||Interchanges with||835 Mossberg style choke tubes|
|Mossberg Silver Reserve 12ga||Interchanges with||Ben/Ber choke tubes|
|Mossberg Silver Reserve 20ga||Interchanges with||Huglu style choke tubes|
|New England||Interchanges with||Winchester, Weatherby, Browning Invector & Mossberg 500 style choke tubes|
|Remington||Interchanges with||Remington style choke tubes|
|Remington Pro Bore||Interchanges with||Model 105CTi, All Parker Models, New 1100 Competition, & Premier O/U|
|Remington Spartan||Interchanges with||Tru-Choke choke tubes|
|Rizzini USA, (B) & (I)||Interchanges with||Verona LX Style choke tubes|
|Ruger Older Models Pre 1992||Interchanges with||Winchester style choke tubes (Short chokes)|
|Ruger SC Newer Models||Interchanges with||Ruger SC style choke tubes (Long chokes)|
|Sako/Tikka 12ga Some||Interchanges with||Invector Plus and some with Valmet choke tubes|
|Savage||Interchanges with||Winchester and Mossberg 500 style choke tubes|
|Savage 411||Interchanges with||Tru Choke style choke tubes|
|Savage 512||Interchanges with||Ber/Ben standard choke tubes|
|SIG Arms (Aurora)||Interchanges with||Verona LX|
|SKB Short Style||Interchanges with||Winchester and Mossberg 500 style choke tubes|
|SKB Competition||Interchanges with||SKB Competition style chokes|
|Smith and Wesson Old Version||Interchanges with||Winchester, Mossberg 500 and Browning Invector style choke tubes|
|Smith and Wesson Current version 2007||Interchanges with||Ber/Ben standard choke tubes|
|Stevens and Savage Model 411||Interchanges with||Tru-Choke or Baikal style choke tubes|
|Stoeger 2000 Semi Auto & P-350 Pump||Interchanges with||Beretta/Benelli choke tubes|
|Stoeger 2000 Condor (O/U)||Interchanges with||Winchester style choke tubes|
|Stoeger Luger (O/U)||Interchanges with||American Arms style choke tubes|
|Stoeger Uplander (Side by Side)||Interchanges with||Winchester style choke tubes|
|Traditions Semi-Auto AIS2100 12 gauge||Interchanges with||Beretta style choke tubes|
|Thompson Center||Interchanges with||Winchester style choke tubes|
|Tri-Star Phantom 411 and TR11||Interchanges with||Rizzini style choke tubes|
|Tri-Star Phantom Field & Model 380D||Interchanges with||Beretta style choke tubes|
|Tri-Star Silver Series||Interchanges with||American Arms, Serial#4687037 or larger is Beretta/Benelli choke tubes|
|Tri-Star Current 3 1/2 Semi Auto||Interchanges with||Crio Plus system|
|Valmet||Interchanges with||Valmet choke tubes|
|Verona LX O/U||Interchanges with||Verona LX choke tubes|
|Verona SX Semi Auto Models||Interchanges with||Verona SX choke tubes|
|Weatherby||Interchanges with||Winchester, Mossberg 500 and Weatherby style choke tubes|
|Winchester||Interchanges with||Winchester, Mossberg 500 Weatherby and Browning Invector style choke tubes|
|Winchester Select Energy||Interchanges with||Browning Invector Plus|
|Winchester Super X2 and Supreme||Interchanges with||Browning Invector Plus style choke tubes|
Do you know what a shotgun shotstring is?