The .444 was introduced in 1964, and the first models officially sold in 1965. These started life with the serial number range AA (I have one too......its mint with the 24" barrel and the Monte Carlo stock)
These are hand loaders dreamguns. The 24" barrel lets you play with different speed powders than the 20 and 22" barrels of today.
As for the rate of twist, it was a 1:38" for yours, and in the late 70's , they went for the 1:20" rate of twist and switched to the six groove ballard rifling (which work better for cast bullet shooting, depending on the cast bullet design)
The new Hornady Leverevolution ammo is not supposed to stabilize well in the slower twist barrels, and it even is stated on the box. (the spitzer needs a fast twist to stabilize in the air.)
I found that they were actually the second most accurate load I have shot in my gun.
(my home loads with the 265 Gr Hornady IL bullets and reloader 7 is still accuracy king in my gun)
hope this helped.
Kearney Dillon
The Springfield 1903 has a 1" in 10" twist rate. The later M1 service rifle also has a 1" in 10" twist rate.
Ruger did for a time have min-14's in 1:7 twist...no longer. But they made enough of them, that they're "findable". The serial numbers are approximately: run start: 1989: 185-56000 or for the Ranch Rifle: 187-84000 run finish: 1994: 186-35000 or for the Ranch Rifle: 188-75000
You need to see a gunsmith.
1:16
It will vary with caliber.
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.
Blue book of gun values
1/10
1/10
Oliver Twist was published as a monthly serial in Bentley's Miscellany, February 1837 to April 1839.
ar-15
Depends on caliber. www.countrygunsmith.net