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12 ga shotgun

The gauge (or commonly bore in British English) of a firearm is a unit of measurement used to express the inner diameter (bore diameter) of the barrel.
Gauge is determined from the weight of a solid sphere of lead that will fit the bore of the firearm and is expressed as the multiplicative inverse of the sphere's weight as a fraction of a pound, e.g., a one-twelfth pound lead ball fits a 12-gauge bore. Thus there are twelve 12-gauge balls per pound, etc. The term is related to the measurement of cannon, which were also measured by the weight of their iron round shot; an 8-pounder would fire an 8 lb (3.6 kg) ball.
Gauge is commonly used today in reference to shotguns, though historically it was also used in large double rifles, which were made in sizes up to 2 bore during their heyday in the 1880s, being originally loaded with black powder cartridges. These very large rifles, sometimes called "elephant guns", were intended for use in Africa and Asia for hunting game.
Gauge is abbreviated "ga.", "ga", or "G".

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Recent contents
  1. nbright

    R&R Targets Wright 12 - Firearm

      1. For Sale
    • $4000
    • Boring
    • Oregon
    Selling my shorty Wright 12, case, two 12 round mags. Pics and video available. 20 round mag also available for $150.
  2. ScottInPDX

    Mossberg 500 with upgrades

      1. For Sale
      2. For Trade
    • $350
    • Tualatin
    • Oregon
    I recently picked up a Mossberg 590A1, so this can go. 12GA, 5-shot magazine tube, 18.5" barrel. It has seen somewhere between 300 and 500 rounds of slugs, birdshot, and 00 buck. The stock is brand new, just pulled off of the M590A1 replacing it. Upgrades: 1. Streamlight TL-Racker forend...
  3. M

    (Reduced) Rio 12 gauge buckshot low recoil

      1. For Sale
    • $250
    • Medford
    • Oregon
    500 round case rio royal buck 12 gauge $300
  4. alelord

    Ithaca 37 featherweight 12ga

      1. For Sale
    • $499
    • Vancouver
    • Washington
    Used Ithaca 37 shotgun 37 featherweight 2.75in chamber Full vent rib barrel 26 in Fixed choke $499 obo Call or text at 3609310464 Transfer done at Al ammo llc Will ship for $35
  5. OregonDues

    Rock Island Armory M5T

      1. For Sale
      2. For Trade
    • $175
    • Portland
    • Oregon
    Rock Island Armory M5T Brand new just got it from RIA, never shot. Cool little handy shotgun a great gift for a youngster or a good cheap truck gun capable of Turkey and slugs. Comes with Three chokes Will trade for a really cool Knife, some fixed Iron sights or a optic riser or some 308 ammo
  6. WildcatShooter

    Federal upland STEEL 12 Gauge 2 3/4 1400 FPS 1 1/8 oz

      1. For Sale
    • $90
    • Wilsonville
    • Oregon
    Federal upland 2 3/4 1400 FPS 1 1/8 oz STEEL Shot shells. 25 rounds per box 175 rounds total. 2 boxes of #7 1/2 shot 5 boxes of #6 shot not upland bird hunting anymore so I have no need for these. these boxes go for $15.99 and up. $15.99 at Cabelas. So……$111.93 and up value. listing for $ 90.00...
  7. daiello91

    Winchester SX4 & Remington Versa Max

      1. For Sale
    • $1
    • Hillsboro
    • Oregon
    ***PENDING SALE*** Well used Remington Versa Max 12 gauge. Shoots 2 3/4, 3, and 3.5 inch shot shells. Camo dip has significant wear but metal is in good shape. Runs good. Condition is 5 out of 10. $100 ***PENDING SALE*** Used Winchester SX4 12 gauge. Shoots 2 3/4, 3, and 3.5 inch shot shells...
  8. Dalshakkamel

    Remington 870 police mag

      1. For Sale
    • $350
    • Gresham
    • Oregon
    I need cash so I’m selling this. Portland police trade in I picked up a while ago comes with the surefire pump that works perfectly. It’ll come with batteries so you can test out the light. I also have an adapter so you can run surefire heads or modlite legacy heads. I put on a magpul...
  9. WAYNO

    CZ Side by Side 12 Ga Shotgun

      1. For Sale
    • $675
    • Oregon City
    • Oregon
    A member has PM'd me that these shotguns are available new for less than my price. I cannot find such offerings, but if a feller wanted this gun, and he could get it for less than my price, I am all ears... CZ Bobwhite G2 12 Ga Bought new and unfired since. Boxed as it left the factory...
  10. Liamd0

    Whinchester Permacote Durability

    I’m looking at a Winchester SX4 and really like the permacote camo wrap, but am wondering if anyone has had issues with the finish peeling. As far as I know, it’s not the same thing as Cerakote, but I’m not sure. This will be a duck gun, so it will take some beatings. Thanks!
  11. R971

    Black Aces Tactical 12 Gauge Semi Auto Shotgun

      1. For Sale
    • $280
    • Hillsboro
    • Oregon
    With two 5 round mags and 1 ten round mag Excellent condition
  12. PDXONE

    Mossberg 590 12g shotgun - beaters ok

      1. Want to Buy
    • Vancouver
    • Washington
    Located in the Vancouver area, looking for a deal for a beater. Thanks!
  13. dlh4x4

    Smith & Wesson M&P12

      1. For Sale
    • $850
    • Lake Stevens
    • Washington
    New, never fired S&W M&P12 pump action shotgun. Includes box Cash only, FTF sale
  14. donbrickles

    Remington TAC-14 shotgun

      1. For Sale
      2. For Trade
    • $429
    • Clackamas
    • Oregon
    New in box, never fired, comes with all new item packaging and pamphlets Willing to meet up in greater portland metro area, further if you pay for gas Local pick up only, OREGON only I will pay FFL fees! Willing to trade for (will add additional funds pending market value): Glock 19 or...
  15. Shootingred994

    LTT BERETTA 1301 tactical (NEW)

      1. For Sale
    • $1750
    • TUALATIN
    • Oregon
    Bought this and then got my hands on a M4. Looking to offload and keep just one. Brand new, unfired. Ordered and shipped from Langdon.
  16. dmmv

    Benelli M4 handguard - HAYL mlok Rail

      1. For Sale
    • $100
    • NW Portland
    • Oregon
    Brand new HAYL metal handguard for a Benelli M4. Was packaged with a new shotgun, has not been fired on the gun. Looks very good in person and has a solid lockup, but I already had a different setup. $100 firm, ftf meet at Sportsman’s 185th, A Cut Above or surrounding area. Thanks for looking
  17. Jason Brown

    12 ga Shotgun ammo, 1 box buck shot, 2 boxes of target/birdshot.

      1. For Sale
      2. For Trade
    • $30
    • Vancouver
    • Washington
    I have 1 box of buckshot and 2 boxes of target shot for sale/trade. Buckshot is Fiocchi 00 buck, 9 pellet. Estate target ammo is 1 1/8 oz. of #8 lead birdshot. NSI target ammo is 1 oz. of #7 steel birdshot. All are 12 ga and 2 3/4 inch. I would ask $30 for all or willing to trade for an equal...
  18. USAF Medic

    Winchester 101 12 ga shotgun

      1. For Sale
    • $1000
    • Lincoln Citu
    • Oregon
    This is a made in Japan Winchester model 101 field grade shotgun with fixed Full over Modified chokes. It has been used for upland bird hunting. It is in very good condition. Some bluing wear from being carried. Minor stock dings here and there. No damage. I’m asking $1,000 or best..
  19. Loomis

    GForce GFPG Pump-Action 12 Ga Shotgun

      1. For Sale
    • $150
    • Damascus
    • Oregon
    Get pumped with the GFPG3 12 gauge shotgun from GForce Arms. Holds 4 rounds, 20" barrel, pistol grip, fixed stock. $150 + $10 background check. I am a small FFL dealer (Loomis Firearms LLC) located in Damascus/Boring, Oregon and would love to earn your business. I am by appointment only...
  20. trevi

    CZ Ringneck Case Coloured SxS 12g

      1. For Sale
    • $825
    • pdx
    • Oregon
    I have a lovely case coloured SxS CZ Ringneck 12g 28 inch. Comes with box, five (5) chokes (two (2) are in the gun), papers..... In great shape but has two impressions in the woodstock on the left side (pictured), must have been from the vest i was wearing then. Will ship. No trades -...
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