Yeah, but they are no much more than a pellet gun.
This sounds like it has a fair amount of mass and is just dancing on the edge of subsonic speed in a pistol. All the others stay subsonic in rifles (which increas velocity).
I’m intrigued.
Squirrels in yard cower before me!
The CCI standard velocity reliably stay below the sonic barrier, and they are rated at 1070 fps. When I tested them, (50 rds measured) they averaged 1072.3 fps with an extreme spread of 84 fps. The max velocity was 1119 fps. I did not hear any sonic crack from the CCI.
65-year-old Remington Standard Velocity ammunition, in the same test, had a little higher average velocity (1098.9), and a little larger extreme spread, with a max velocity of 1143.
I heard a few sonic cracks with that ammunition.
As the ammunition produced for suppressors is designed to stay below the speed of sound, I expect it will do so.
I shot squirrels all the time with subsonice .22 ammo. I think I might be using paper boxed CCI or maybe Aguila rounds. If the first shot doesn’t kill them I give a second shot to the head - which is usually necessary.