Also consider this table:
http://www.ballisticsbytheinch.com/22.html
Although the velocities listed don't precisely replicate what I see on my chronograph, they illustrate the point nonetheless.
In a 2" barrel, the 32gr. Stinger made 974fps for 67lb-ft. of muzzle energy. 40gr. LRN Winchester Super-X did 862fps - for 66ft-lbs. of energy. It's a wash in terms of energy, and you get less flash and bang with the standard load. This will produce equal or better penetration, and the bullet will hold up better if it strikes bone. Cheap practice, as well.
And Velocitor? Only 20fps faster than Super-X by their testing.