I run the Remington Subsonic .22 LR through my Buckmark when the suppressor is attached, because it's the only hollow point load available locally. (I honestly don't know what all other options are out there, since I don't really care. That's something that I want to buy locally, and I only want HPs.) I've tried the CCI subs and, I believe, Aguila; but only for function and sound testing.
I chronographed some of the Remington, but don't recall what the numbers were. Based on sound:
In warm weather, they're always subsonic (from 4,400 ft asl to over 9,000 ft).
On cold days, especially at lower altitudes, they're right on the edge. Some are subsonic, some have a little crack to them.
When the pistol is clean, I get a failure to eject or failure to feed about 1 in 20 rounds - both caused by short-stroking.
As the pistol gets dirty (which happens a lot faster with the suppressor), the failure rate increases to the point that it's malfunctioning 90% of the time with about 80 rounds through it.
It's just the nature of the beast.
There is no one-size-fits-all load that can be guaranteed to function 100% in various pistols and rifles with various barrel lengths; nor can it be guaranteed to be subsonic at all altitudes and temperatures, from various barrel lengths and action types, while still cycling those various action types.
Find what mostly works, and run with it.
*I live at 4,600 ft, do most of my shooting between 4,800 ft and 5,500 ft, and do most camping (with shooting) and hunting between 6,600 ft and 9,500 ft.