Twist rate in rifle for handgun calibers.

[Ruger1nut]

Does anyone know what the appropriate twist rates would be for a handgun caliber in a rifle with 22" or so barrel?

Thinking like for 357, 41mag, 44mag, 45 colt 480 Ruger etc

Dave

[flattop44]

Its 1:20" for the M77 .44 Mag. I believe they have a 18.5" barrel.
FT44

[ElNumeroUno]

I just know they are a slow twist, as flattop44 notes.