A good .22 upper offers the shooter the same type of advantages as, let's say, a Marvel .22 conversion for a 1911. The .22 allows inexpensive practice with the same trigger, same weight, same configuration as is used in competition. Practice can be had at more limited ranges than are practical with the HP centerfire loads. This is especially valuable for offhand practice. I can take my rifle to an indoor range and shoot at 50 ft - reduced target - and have a useful practice.
"Only hunting and mountain climbing are sports. The rest are just games." - R.Ruark
NRA Life Member