grooves with twist of one turn in 12 inches

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• Twist rate — is a gun term that refers to the rate of twist of a gun barrel s rifling grooves.Fact|date=February 2007It is usually expressed as a ratio of one twist per n inches or centimeters.For example, a 1:7 twist rate means one complete rotation in… …   Wikipedia

• Armstrong Gun — The Armstrong Gun is a type of large rifled gun first manufactured in England in 1855. It was designed by Sir William Armstrong and manufactured by the Elswick Ordnance Company and the Royal Arsenal at Woolwich.HistoryIn 1854 Armstrong approached …   Wikipedia

• Rifling — refers to the helix shaped pattern in the barrel of a firearm, which imparts a spin to a projectile around its long axis. This spin serves to gyroscopically stabilize the projectile, improving its aerodynamic stability and accuracy.Rifling is… …   Wikipedia

• Marlin Firearms — Company Type Subsidiary Industry Arms industry Founded 1870 Founder(s) …   Wikipedia

• textile — /teks tuyl, til/, n. 1. any cloth or goods produced by weaving, knitting, or felting. 2. a material, as a fiber or yarn, used in or suitable for weaving: Glass can be used as a textile. adj. 3. woven or capable of being woven: textile fabrics. 4 …   Universalium

• eye, human — ▪ anatomy Introduction  specialized sense organ capable of receiving visual images, which are then carried to the brain. Anatomy of the visual apparatus Structures auxiliary to the eye The orbit       The eye is protected from mechanical injury… …   Universalium

• cricket — cricket1 cricketlike, adj. /krik it/, n. 1. any of several jumping, orthopterous insects of the family Gryllidae, characterized by long antennae and stridulating organs on the forewings of the male, as one of the species commonly found in… …   Universalium

• Table saw — A table saw, equipped for cutting large pieces of sheet stock. Other names Sawbench Classification Power tool Manufacturer Bosch, Makita …   Wikipedia

• MythBusters (2011 season) — Country of origin Australia United States Broadcast Original channel Discovery Channel Original run …   Wikipedia

• SR-25 — For State Route 25 or State Road 25, see list of highways numbered 25. SR 25 Mk 11 Mod 0 Type Sniper rifle …   Wikipedia

• hand tool — any tool or implement designed for manual operation. * * * Introduction  any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …   Universalium