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caliber
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).
For sale are two Bobcat rifles. They are pretty much the same gun; both little 'starter' rifles, great for plinking; both 50 caliber; both caplock, and both heavy-barreled with fixed iron sights.
These little guys are plenty of fun, both could use a good scrubbing and have various portions...
I have one .50 caliber Hawken for sale with a rather unique flintlock mechanism (at least to me, I'm by far used to the caplock, I've never held a flint hawken in person before). It has some surface rust that needs attending near the touch hole but other than that appears to be in great shape...
I am looking at buying a new revolver and am asking for some input.
FIRST CRITERIA: it has to have 6 rounds capacity.
SECOND: has to be a caliber that is compatible with a rifle. Edit * lever action rifle *
THIRD: reasonably priced ammunition.
FOURTH: self defense round capable of stopping two...
I am in need of 9mm Luger and 223/556 caliber conversions for my Dillon 550 and have the following conversions to trade. Thanks
45acp
45 colt
30-30
38 special
30 carbine
44 mag
So a coworker brought me this old round today. Not sure what it is. It looks like a .50 cal but the stamp on the bottom says 52. Is that the caliber of it or just a marking?
Thought I would pick the brain of those that have way more experience than I do.
To makes things even more complicated. We're limited to 10 choices max on these polls. Which one would you choose n' why?
You can only pick one but you can change your vote. Same as the last poll.
*edit: 9x23 Winchester (not 9x25) Tried to change it but it won't let me. And I should've...
Full setup to reload for 40sw and 10mm, lightly used caliber conversion, sdb,
I think it did less than 1000 rounds. Check out the pictures, ask questions. $100
Will ship
Trades:
.308 bullets, 125-168 grain
A1680 powder
H4227 powder
Small rifle Magnum primers
Japanese Arisaka Type 99 Short rifle in 7.7 caliber. It was made in the Kokura factory in 1942
with matching bayonet and scabbard. These battle souvenir's are exactly as they came home from the war.
Asking $400 or best offer
No Trades
Japanese Arisaka Type 99 Short rifle in 7.7 caliber. It was made in the Kokura factory in 1942
with matching bayonet and scabbard. These battle souvenir's are exactly as they came home from the war.
Asking $475
No Trades
I've been cleaning out my garage and found a caliber conversion for 44mag/44spl that was tucked away. I no longer have the Dillon so it's no good to me. Message with any questions. Looking to get $35 for it.
Thanks!
I finally got this thing all together. It's been a struggle. Parts not working, had to machine a notch in the bolt which had to have the weight removed to work with the captured spring in the stock. This whole thing has just been temperamental. Finally got it (for the most part) together...
A group of like-minded individuals in my neighborhood have all decided to get together and plan some of their gun purchases. Specifically hunting rifles. We decided that since we are not really "married" to any caliber bullet yet, it would be best to get guns that share the same caliber so that...
Yep, another "which caliber is best" thread!! If interested, read on, if not, read on!
Nearing the top of my 'want' list is the Ruger Precision rifle. If I don't get it this year, I will get one next year. I find I'm back and forth over the caliber choice though. I'm always interested in...
TIL
Navy Caliber is far, far different from Army.
16 x 50 = 16 in and 16x50 or 800 inches for barrel length.
Both photos feature 16in guns. The Wisconsin and Coastal Defense - Panama.
Near, but not quite, the bottom of this web page:
<broken link removed>
As some people pointed out I limited myself a little (okay a lot) on the last poll I did on this topic. I went out and shot a lot of calibers and have chosen the ones I like the best. I will be shooting out to about 600 yards (not for hunting, more for confidence) and want a caliber capable of...