If you require expansion, go ahead and buy the PREMIUM bullets that do reliably expand at subsonic velocities.
Several manufacturers selling such a thing. I bought a couple hundred from Lehigh. Will last me a lifetime.
Yeah, they cost three or four times the price of non-expanding bullets, but so what? How many animals are you REALLY going to shoot with subsonic ammo. A few rounds on paper to get a 50 yard zero, and you're done wasting expensive bullets. Use the rest of them for killing. I don't know of anyone who is shooting at anything requiring an EXPANDING bullet who has put himself in the poor-house buying top-end bullets to build subsonic ammo for killing animals.
For plinking, just use the 147-grain FMJ's. They only cost about 14 cents each. You can run the 147's sub or super. I do.
If you use non-expanding for hunting, punch them in the lungs. Nothing lives long with a collapsed lung. Only a few minutes.
You should be able to place the shot pretty well if you keep your distances to 50 yards. Subs drop about 4 inches out to 50 yards. At 100 yards, its about 14 inches. 100 yards is a very questionable shot for subs. Beyond that is 100% a bad idea.