The 4000 FPS 22-250 is a varmint round, varmint hunting refers to hunting prairie dogs or coyotes or the like at long distances, with many shots over 200 yds. The 223 is also used extensively for this purpose.
There are technical reasons that idiots like you shouldn't be crafting legislation on this topic, several of which I've already pointed out. And you may know more than our idiots in Washington.
If you are going to ignore my points and argue past me, as you've done here, there is no reason to continue.