Keep a couple of things in mind. Where .22 LR is primarily a short range round, the same kind of accuracy doesn't really apply like it would to say, a premium bench-rest rifle. Even if you completely shoot it out, you might move it from 1 MOA to 1.5 MOA. Where this is death for an extremely accurate rifle, it's not AS big of a deal for a .22. (At least not to ME.)
Also, .22 LR ammo isn't jacketed. Soft lead bullets don't grind out the rifling the same way long-term usage of fmj does. If you can 'shoot out' a .22, I have never heard of it. I suppose if you have a serious varmint-barreled tac-driving 10/22 setup, and you just shoot it to death for years, you might do some damage.
Last summer, I took my dad's 10/22 (completely stock) which is about 35 years old, he cheerfully claims "I've shot a bajillion jackrabbits with this rifle, and even cleaned it once or twice," to the range, resting it over a sandbag, using standard winchester ammo, I started doing 3" groups at 100 yards, when I was warmed up and broken in, I had them almost down to 2". How much accuracy do you need from a short-barreled .22?