As I mentioned earlier, it is possible to duplicate .22 Hornet ballistics in .222 and .223 cases by downloading, which involves the use of faster handgun and shotgun propellants. Red Dot works very well for that purpose. About the only reason to do that would be to reduce the noise level for use in more-habitated areas. You can also do the same thing with larger calibers such as downloading a .30-'06 to .30-30 levels (or even less) in the same way.