It will vary with caliber.
Them twist rate of a Winchester model 70 rifle in .223 Rem.is 1"in 9".
1 in 16"
Your Winchester model 70 bolt action rifle that is chambered in .300 Win Mag,has a twist rate of 1 in 10.
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 Springfield 1903 has a 1" in 10" twist rate. The later M1 service rifle also has a 1" in 10" twist rate.
The Revelation .308 was sold by Western Auto in the 1970's. It has 8 grooves and a 16" twist on the bolt action model. I am not sure who the manufacturer was; but Western Auto is still in business and perhaps they would know.
You need to see a gunsmith.
Not sure what brand/model you are referring to- but the most "skeletonized" 22 rifle I have seen was an all metal single shot twist barrel gun made by Garcia- the Bronco. They are $75-$150, depending on condition.
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.
This rifle was built by Mossberg and was labeled the 800B. The "B" series was sold thru Montgomery Wards and other large reatilers. All Mossberg model 800 .243 rifles manufactured had a twist rate of 1 in 10. So I believe it is safe to the twist rate is 1 in 10.
1/10