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In guns, particularly firearms, caliber or calibre is the approximate internal diameter of the barrel, or the diameter of the projectile it fires, in hundredths or sometimes thousandths of an inch. For example, a 45 caliber firearm has a barrel diameter of .45 of an inch. Barrel diameters can also be expressed using metric dimensions, as in "9mm pistol." When the barrel diameter is given in inches, the abbreviation "cal" (for "caliber") can be used. For example, a small-bore rifle with a diameter of 0.22 inches can be referred to as .22 or a .22 cal; however, the decimal point is generally dropped when spoken, making it a "twenty-two caliber" or a "two-two caliber rifle".
In a rifled barrel, the distance is measured between opposing lands or grooves; groove measurements are common in cartridge designations originating in the United States, while land measurements are more common elsewhere. Good performance requires a bullet to closely match the groove diameter of a barrel to ensure a good seal.
While modern cartridges and cartridge firearms are generally referred to by the cartridge name, they are still lumped together based on bore diameter. For example, a firearm might be described as a "30 caliber rifle", which could be any of a wide range of cartridges using a roughly .30-in projectile; or a "22 rimfire", referring to any rimfire cartridge using a 22-cal projectile.
Firearm calibers outside the range of 17 to 50 (4.5 to 12.7 mm) exist, but are rarely encountered. Wildcat cartridges, for example, can be found in 10, 12, and 14 cal (2.5, 3.0, and 3.6 mm), typically used for short-range varmint hunting, where the high-velocity, lightweight bullets provide devastating terminal ballistics with little risk of ricochet. Larger calibers, such as .577, .585, .600, .700, and .729 (14.7, 14.9, 15.2, 17.8, & 18.5 mm) are generally found in proprietary cartridges chambered in express rifles or similar guns intended for use on dangerous game. The .950 JDJ is the only known cartridge beyond 79 caliber used in a rifle.
In some contexts, e.g. guns aboard a warship, "caliber" is used to describe the barrel length as multiples of the bore diameter. A "5-inch 50 calibre" gun has a bore diameter of 5 in (12.7 cm) and a barrel length of 50 times 5 in = 250 in (6.35 m).
$340 for everything
Selling it all together.
Traditions Buckhunter Inline-LFS .54 caliber 1:48"
Sling and soft case
10 count of Black Belt Bullets .54 cal 295 grain HP Pure-lead
29 count of PowerBelt Bullets .54 cal 384 grain HP Pure-lead
7 count of Hornady Great Plains .54 cal .390 grain...
I've got a bunch dies in flavors I no longer have a use for.
They are very clean and good shape.
I'd like to either sell them or trade them for other fun flavors of die sets or AR/Glock mags (6.5 Grendel, 450 Bushmaster, 7.62X39, 22TCM, etc... ) or mags with fun round counts like 5/10/20/40, or...
I recently got a s&w 357 and have been dying to make up some magnum loads. I have a ton of 38special brass but VERY little magnum. If anybody some what local to me has more than needed, I would trade 223 or 9mm brass in WHATEVER quantity makes it worth your while. I have atleast 3000 of 223 and...
I've seen pieces of this video before but not one that is so complete and the narration really helps. But maybe it's out there and I missed it. The footage, however, is incredible! It was taken from a Predator drone and is supposedly the first recorded action of a MoH recipient.
I think the Remington Model 8 is a really cool rifle...but it's chambered in essentially defunct calibers.
I'd love to see the Model 8 in a modern caliber (300 BLK would make sense but I think .357 would be way cool too)
What old firearm would you like to see in a modern caliber?
This podcast is an eye opener. Massad Ayoob interviewed a Chicago cop with 30+ years of experience. Along with some excellent advice ("You do what you need to do to get home at the end of the day. [In a gunfight] you have to come out the winner."), he recounts a story about a man who attacked...
This item is tentatively sold.
Thank you for your interest.
For sale is my brand new unfired (except for possible factory test fire), SIG P226 in .40 Caliber for just 699.00 with original box, 2 Sig Magazines and all paperwork.
Most SIG’s have just a stainless slide, but this one is one of the...
ITEM IS SOLD.....
THank you for your interest.
For sale is 1000 Rounds of Brand new, Factory Federal HXP .40 Caliber Jacketed Hollow Point, and Remington 180 grain .40 Caliber ammunition for just 199.00
Ammo can is brand new and is 10.00 extra.
Buyer must be at least 21 years of age and...
Perhaps I'm too much of a WWII fanboy but modern pistol caliber carbines look terrible. Beyond the classic lever actions or WWII firearms the choices available are something out of a 1950s Sci-Fi movie or a boring copy of an AR type platform.
Remington 722 in 244 Rem. caliber (now called 6mm Rem.) Weaver bases.
It came to me in a trade several years ago but I've never fired it. Now trying to limit my collection to the safe capacity. :(
Located in the Vancouver area. No shipping.