Ir refers to number of inches of length that it takes for the spiral line of the rifling to make one complete 360 degree turn.
The "rate of twist on rifling" is caliber specific. To give you an answer we would need to know which cartridge the rifle is chambered for.
Them twist rate of a Winchester model 70 rifle in .223 Rem.is 1"in 9".
The Springfield 1903 has a 1" in 10" twist rate. The later M1 service rifle also has a 1" in 10" twist rate.
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The Remington Model 66 is chambered for the .22 long rifle cartridge. The most common twist rate for the .22 long rifle is one full turn in sixteen inches (1:16).
The Browning Lever Rifle (BLR) chambered in .223 typically has a twist rate of 1:8 inches. This means that the rifle's barrel makes one complete rotation for every 8 inches of travel down the barrel. This twist rate is designed to stabilize a wide range of bullet weights, particularly heavier projectiles, which are commonly used in .223 ammunition. Always check the manufacturer's specifications for the most accurate information.
The rate of twist for a Browning X-Bolt 24-inch barrel typically varies depending on the specific caliber of the rifle. For example, the .308 Winchester generally has a twist rate of 1:10 inches, while the .30-06 Springfield may also feature a 1:10 twist. Always refer to the manufacturer's specifications for the exact twist rate corresponding to your specific X-Bolt model and caliber.
The Remington 700 BDL chambered in .308 Winchester typically has a twist rate of 1:10 inches. This means that the rifle's barrel will make one complete rotation for every 10 inches of travel down the barrel. This twist rate is well-suited for stabilizing a wide range of bullet weights commonly used in .308 cartridges.
The Browning 2007 Product Catalog states that the A-Boltchambered for 25WSSM with a 22" barrel has a 1 in 10" rate of twist.
The Remington 7600 typically features a barrel twist rate of 1:10 inches for its .30-06 and .308 caliber models, which is designed to stabilize the bullet for accurate shooting. This twist rate allows for optimal performance with a variety of bullet weights commonly used in these calibers. However, it's important to check the specific model and caliber, as variations may exist. Overall, the twist rate contributes significantly to the rifle's accuracy and effectiveness.
"Twist rate" depends on a particular cartrige the barrel is chambered for. For example: A .30-06 would have a twist rate of one full turn in 10 inches. A .308 would use a twist rate of one full turn in 12 inches.
Depends on caliber. www.countrygunsmith.net