A silencer would not be effective on most stock revolvers because of the forcing cone gap.
I always thought that a S&W Russian pistol would be better due to the cylinder moving forward to seal the gap.
The rest of the story:
https://www.range365.com/suppressed-38-revolver-made-for-tunnel-rats-in-vietnam/
The Nagant M1895 moved the cylinder forward when the gun was cocked, to close the gap between the cylinder and the barrel, providing a boost to the muzzle velocity of the fired projectile and allowing the weapon to be suppressed (an unusual ability for a revolver).
They need some of those movie and TV revolvers.