Shotguns - Turkey - Remington 870
Budget - Competition - Versatility.
Gunsmithing - Burnish - Forcing Cones.
Chokes - Tubes - Types - Turkey.
Shells - Steel - Lead - Turkey - Slugs.
Shooting - Stringing - Drop - Game Guide
Pattern - Turkey - Analysis - Improve.
Shotguns:

 In this online shotgun guide you will find various articles and technical information on shotguns including; shotgun shells, shotshell reloading, shotgun gunsmithing, shotgun shooting, shotgun hunting, game and choke guides, shotgun buying guide, shotgun versatility and much more.

Shotgun Definition:
 Our modern definition of a shotgun is: A shoulder fired firearm with a smooth bore, designed to fire small metallic pellets, shot, or rifled slugs, either muzzle-loaded by use of gunpowder, wad, shot and over-shot wad or breech-loaded by use of modern primer center-fire shotgun shell, a gun with no grooves in its barrel.

Shotgun Barrel Choke:
 The purpose of a shotgun having choke is to extend the distance at which you can effectively shoot shot and cleanly break targets or harvest game. The addition of choke constriction to the muzzle end of the shotgun bore extended the distance of multiple projectiles (shot) clearly defining (a shotgun). Types of choke; fixed and choke tube.

Determining Shotgun Gauges:
 Determining the gauge of a shotgun was simply how many pure lead round balls of its bore diameter would it take to consume a pound of lead. This was a simplistic approach and rather effective as shotguns could be loaded with lead round ball or lead shot making for great versatility and used for a wide variety of tasks.

Shotgun Bore Diameters:

  • 10 Gauge = Bore Diameter of .775 inches.
  • 12 Gauge = Bore Diameter of .729 inches.
  • 16 Gauge = Bore Diameter of .662 inches.
  • 20 Gauge = Bore Diameter of .615 inches.
  • 28 Gauge = Bore Diameter of .550 inches.
  • .410 Bore = Bore Diameter of .410 inches.

Shotgun Chambers:
 Around 1930 standards were finally set worldwide on chamber dimensions for all shotgun gauges, up to this point chamber dimensions varied greatly between countries and manufacturers so care should be taken when firing any shotgun manufactured prior to 1930. Many of these shotguns will have short chambers and when fired using todays more powerful ammunition extreme pressures will be exerted on the chamber area do to the fact that the shotshell crimp will actually be opening into the forcing cone area and not before it. Shotgun barrel forcing cones force the shot charge or shot column down in diameter to enter the bore.

Shotgun Chamber Lengths:

  • 10 Gauge = Chamber Length of 2 7/8".
  • 10 Gauge = Chamber Length of 3 1/2".
  • 12 Gauge = Chamber Length of 2 3/4".
  • 12 Gauge = Chamber Length of 3".
  • 12 Gauge = Chamber Length of 3 1/2".
  • 16 Gauge = Chamber Length of 2 3/4".
  • 20 Gauge = Chamber Length of 2 3/4".
  • 20 Gauge = Chamber Length of 3".
  • 28 Gauge = Chamber Length of 2 3/4".
  • .410" Bore = Chamber Length of 2 1/2".
  • .410" Bore = Chamber Length of 3".

Shotgun Chamber Diameter Rear And Front:

  • 10 Gauge = Chamber Length of 2 7/8",
    .8550" Rear And .8410" Front Chamber Diameter.
  • 10 Gauge = Chamber Length of 3 1/2",
    .8581" Rear And .8410" Front Chamber Diameter.
  • 12 Gauge = Chamber Length of 2 3/4",
    .8100" Rear And .7980" Front Chamber Diameter.
  • 12 Gauge = Chamber Length of 3",
    .8111" Rear And .7980" Front Chamber Diameter.
  • 12 Gauge = Chamber Length of 3 1/2",
    .8111" Rear And .7980" Front Chamber Diameter.
  • 16 Gauge = Chamber Length of 2 3/4",
    .7450" Rear And .7320" Front Chamber Diameter.
  • 20 Gauge = Chamber Length of 2 3/4",
    .6980" Rear And .6850" Front Chamber Diameter.
  • 20 Gauge = Chamber Length of 3",
    .6992" Rear And .6850" Front Chamber Diameter.
  • 28 Gauge = Chamber Length of 2 3/4",
    .6270" Rear And .6140" Front Chamber Diameter.
  • .410" Bore = Chamber Length of 2 1/2",
    .4780" Rear And .4630" Front Chamber Diameter.
  • .410" Bore = Chamber Length of 3",
    .4811" Rear And .4630" Front Chamber Diameter.

Shotgun Chamber To Bore Forcing Cone Lengths:

  • 10 Gauge Forcing Cone Length = .3772 inches.
  • 12 Gauge Forcing Cone Length = .4172 inches.
  • 16 Gauge Forcing Cone Length = .3829 inches.
  • 20 Gauge Forcing Cone Length = .4001 inches.
  • 28 Gauge Forcing Cone Length = .3943 inches.
  • .410" Bore Forcing Cone Length = .3029 inches.

Shotgun Actions And Types:

  • Bolt-Action Shotgun; A shotgun, that is manually loaded, cocked, and unloaded by pulling a bolt mechanism up and back to eject a spent cartridge and load another.
  • Combination Shotgun-Rifle; A shotgun with 2 or more barrels, normally a rifled rifle barrel over top of the shotgun barrel and a break open design like a single shot.
  • Double-Barrel Over and Under Break Action Shotgun; A shotgun with two barrels, one above the other.
  • Double-Barrel Side-by-Side Break Action Shotgun; A shotgun with two barrels, one beside the other.
  • Lever Action, Shotgun; A shotgun, that is loaded, cocked, and unloaded by an external lever usually located below the receiver.
  • Pump Action or Slide-Action, Shotgun; A shotgun that features a movable forearm that is manually actuated to chamber a round, eject the casing, and put another round in position to fire.
  • Semi-Automatic, Shotgun; A shotgun in which each pull of the trigger results in a complete firing cycle, from discharge through reloading. It is necessary that the trigger be released and pulled for each cycle. These firearms are also called autoloaders or self-loaders. The discharge and chambering of a round is either blowback operated, recoil operated, or gas operated.
  • Single-Shot, Shotgun; A shotgun in which only one shell can be loaded and fired at a time.

Shotgun Resources And References:
Shotguns:
Budget
Competition
Turkey
Versatility
Remington 870
Chokes:
Choke Tubes
Choke Tube Types
Turkey Chokes
Gunsmithing:
Bore Burnishing
Forcing Cones
Back Boring
Stock Fitting
Stocks Don't Fit
Shooting:
Shot-Strings
Shot Drop
Game Guide
Patterning
Patterning For Turkey
Analysis
Improvements
Shotgun Shells:
Steel vs Lead
Lead Poisoning
Turkey
Reloading
How To Reload
Recoil
L.U.P./P.S.I.
Guns Directory:
Shotguns For Sale
Guns Directory:
Ammunition For Sale
Shotgun Maintenance And Protection: