Accuracy International Arctic Warfare - Design Details - Barrel

Barrel

The free-floating, heavy, stainless steel barrels (stainless steel barrels resist throat erosion better than normal barrels) for the available cartridge chamberings all have a different length, groove cutting and rifling twist rate optimized for their respective chambering and intended ammunition. For the .243 Winchester chambering barrels the twist rate is 254 mm (1 in 10 in) and for .308 Winchester/7.62x51mm NATO chambering barrel variants the twist rate is 305 mm (1 in 12 in) excepted for the suppressed barrel variant. If the consistent accuracy requirement of an operator is no longer met the barrel can fairly easily be renewed. This is normal practice for active high performance precision rifle operators, who regard barrels as expendable items. The barrels are provided by the Australian Madco Arms (button rifled), and the Scottisch company Border Barrels, who cut-rifles them on genuine Pratt & Whitney rifling benches. Twists are one turn in 10,11,12,13 and 14 inches for 7.62 MM depending on RFP.

Read more about this topic:  Accuracy International Arctic Warfare, Design Details

Other articles related to "barrel, barrels":

Slug Barrel
... A slug barrel is a barrel for a shotgun that is designed primarily to fire slugs. ...
Wine Cave - Humidity
75% for reds and over 85% for whites to be ideal for wine aging and barrel storage ... In Northern California, wine barrel evaporation in a surface warehouse is on the order of 4 gallons (15.1 liters) per each 60 gallon (227 liter) barrel per year ... In a wine cave, barrel evaporation is reduced to about 1 gallon (3.8 liters) per barrel per year ...
Barrel - Sizes
... A barrel is one of several units of volume, with dry barrels, fluid barrels (UK beer barrel, US beer barrel), oil barrel, etc ... The volume of some barrel units is double others, with various volumes in the range of about 100–200 litres (22–44 imp gal 26–53 US gal) ... wine casks English wine cask units gallon rundlet barrel tierce hogshead firkin, puncheon, tertian pipe, butt tun 1 tun 2 ... pipes, butts 1. 1⁄2 3 ...
Tun (unit) - Units - Barrel
... Further information Barrel (unit) The wine barrel was half a wine hogshead, a quarter of a butt, an eighth of a tun or approximately 118 to 120 litres ... The imperial wine barrel was 26+1⁄4 imperial gallons (119.3348625 litres) and the US wine barrel was 31+1⁄4 US gallons (118.29411825 litres) ...
BL 60 Pounder Gun - Description - General Features
... The barrel was a wire wound A tube in a jacket with a screw breach ... Recoil system was below the barrel and used a hydraulic buffer with a hydro-pneumatic recuperator to return the barrel to its firing position ...

Famous quotes containing the word barrel:

    When you got to the table you couldn’t go right to eating, but you had to wait for the widow to tuck down her head and grumble a little over the victuals, though there warn’t really anything the matter with them. That is, nothing only everything was cooked by itself. In a barrel of odds and ends it is different; things get mixed up, and the juice kind of swaps around, and the things go better.
    Mark Twain [Samuel Langhorne Clemens] (1835–1910)

    My long two-pointed ladder’s sticking through a tree
    Toward heaven still,
    And there’s a barrel that I didn’t fill
    Beside it, and there may be two or three
    Apples I didn’t pick upon some bough.
    But I am done with apple-picking now.
    Robert Frost (1874–1963)

    Peaches grow wild, and pigs can live in clover;
    A barrel of salted herrings lasts a year;
    The spring begins before the winter’s over.
    Elinor Wylie (1885–1928)