Thats my opinion that they would work in your AR-7. That extra power in a stinger may come in handy when your firearm is dirty and you need it to cycle. The Ruger 10-22 is complex compared to a bolt gun or even a Henry AR-7 and stingers work in uger 10-22s so yes. Give it a try.
If not, CCI (who makes stingers at 32 grains), makes a 40 grain hollowpoint called velocitator that goes faster than regular high velocity 40 grain hollowpoints.