Remember that Stingers and others are plated lead bullets. Velocity over 1150 or so is going to put down some lead deposits in your barrel, so clean the bores with good 22 RF brushes from time to time.
Shooting Super high velocity 22 rf can pay off, but you have to count the cost, Consider the CCI Velocitors, Aguila, and Winchester super velocity, all 40g instead of the 29g Stingers. The heavier bullet will equal more penetration. You have to of course see if your rifle will accurately shoot SUPER HV ammo. I have had exceptional luck with cci MINi Mag HP, in 40g hp, but never shot them on coyotes.
I killed a LOT of coyotes in Az with a Ruger all weather 22 mag shooting Win 40g HP, they kill very well, gun will never be sold.
Stingers, Velocitors, Aguila, new Winchester HV(1375) foul a barrel pretty quick, perhaps within 40 rounds, so keep your barrel clean. Master the High Velocity ammo, barrel fouling tendencies, and drop. I sight mine in at 100, know the drop at 50, done.
For those that never clean your 22 RF, good luck with spray and pray! It is better to think, "One shot, One kill"
My custom Ruger 10/22 will shoot sub 1" groups at 100 yards in the calm with clean barrel, cci standard velocity.
In my custom Ruger 10/22, CCI mini mag hp shoots 1.5" at 100, calm and clean. Stingers shoot 4" groups at 100. Accuracy in a top grade barrel is GONE in 50 rounds of Stingers. At 100 yards, I am confident that 90% of all coyotes shot in the lungs will be dead within 250 yards, which means that I find few if any of them. At 30 yards, the recovery would be greater. At what point I am more productive using a 12ga shotgun with appropriate choke and shot vs a 22 RF, I don't know. I would opt for the shotgun without reservations.
For the average guy, cci 40g mini mag hp is a LOT better option over the Super Velocity rounds, but you have to shoot up what you have. The mini mags keep the gun accurate longer.
Back during the last jack rabbit population explosion, we shot untold thousands of jack rabbits with 22 RF. We shot a LOT of stinger ammo and I bought it by the case. Shooting a lot of Stinger ammo is where we learned how the stingers foul the barrels. Stingers killed jack rabbits better than the Mini Mag Hp at 100-125 yards. Our problem was how to keep the guns accurate, up and running for a weeks hunt. The answer was RWS sub sonic HP, they kill very well on jack rabbits.
You Tube has a bunch of videos on Velocitor, Stinger, Aguila, and others.
I did some research on the CCI Velocitors that are loaded with a Gold Dot bullet. The Gold Dot maybe a jacketed bullet with the lead bonded to the core, if it is, their marketing dept dropped the ball in it's advertising. A jacketed bullet in a 22 RF would be a HUGE plus in keeping lead fouling down to a minimum. Further research is needed.
From the CCI web site on the Velocitors:
22 LR Velocitor AMMUNITION
FEATURES & BENEFITS
40 grain gilded hollow point nose at 1435 ft/sec
22 percent greater energy at 100 yards than regular
high-speed hollow points
Special HP cavity design, derived from Speer® Gold Dot®
technology, retains virtually 100 percent bullet weight
Clean-burning propellants keep actions cleaner
Sure-fire CCI priming
Reusable plastic box with dispenser lid
Velocitor # 0047
Caliber
Bullet Weight (gr)
Bullet Type
Box Count
22 LR
40
CPHP
50
Velocity, ft/sec
Muzzle
50 yards
75 yards
100 yards
1435
1230
1149
1084
Energy, ft-lbs
Muzzle
50 yards
75 yards
100 yards
183
134
117
104
Trajectory if sighted at 75 yards
25 Yards
50 yards
75 yards
100 yards
0.3
0.9
0.0
-2.5