I would go with the Velocitors. My 77/22 will shoot a 1/2" group at 50 yards with the velocitors and about a 3" group at 50 yards with the stingers.

I would use the Velocitors on coyotes out to 100 yards. They only have about 20-30 ft-lbs less energy at 100 yards than the 17 HMR or 22 mag. Its not the best option but it will work if that is what you have. The velocitors mushroom like a hunting bullet does, there is no explosion at all but it will get better penetration and better accuracy than the stingers.