Ah. That makes sense.
I'm not aware of any guns that will shoot that ammunition very well without a barrel change.
You've got a couple of options:
Get a 10/22 and then find a 1:9 twist replacement barrel for it. There are a few places selling them.
If you have an AR in .223/5.56 with a barrel twist of 1:9 or faster, you can get a .22LR conversion kit for it.