What is the twist rate of a barrel?
Twist rate is the ratio of inches of bullet travel down the barrel needed to rotate the projectile one full turn. In this case, the bullet makes one full rotation every seven inches.
Does barrel length affect twist rate?
Barrel Length Doesn’t Change Rifling Twist Rate If the rifling grooves make a complete revolution in 9 linear inches, it is a 1:9” twist whether the actual barrel is 9 inches long, 30 inches long or just 3 inches long. A 3-inch barrel with 1:14” twist spins its bullets the same as if it were 14, 24 or 48 inches long.
What kind of barrel does a pre 64 Winchester Model 70 have?
A good reason to call the Pre 64 model 70, “The Rifleman’s Rifle”. It would lead the way. The first year production rifles would be the standard model, national match model with 24 inch barrels, and the bull gun with a 28 inch barrel in 30-06 only.
Are there different twist rates for rifle barrels?
Not all rifle barrels of the same caliber have the same twist rate. A fellow ordering a custom rifle may have his own ideas about twist, as may the builder. For example, some .270 Win. barrels are rifled with a 1 in 12 inches twist, some .30-06 barrels are also rifled 1 turn in 12 inches and some .300 Magnum barrels are rifled 1 turn in 14 inches.
What was the Winchester Model 70 in 1937?
The first year production rifles would be the standard model, national match model with 24 inch barrels, and the bull gun with a 28 inch barrel in 30-06 only. The Winchester model 70 of 1937 would be chambered in the 250 Savage, 220 Swift, 257 Roberts, 270 Winchester, 7 mm Mauser, and 30-06.
Is the Winchester 70 30-06 target rifle in good condition?
Bore is bright and rifling crisp/sharp. It has the heavy, not the bull barrel and wears the standard Marksman stock with the adjustable hand rest on the bottom of the forearm. Both wood and metal are in very good condition….overall, about 97%. It has no sights, but does wear a set of Leupold bases and rings.