It is FUN. With a short gun the challange is there, not quite as much as big bore but close. Targets weigh 1/4 as much which is nice for a smaller group of folks to deal with. Sticking with .30 or larger and straight walled pistol cartridges it is good as rifle and pistol and a great way to introduce folks to freestyle shooting as well as the standard Standing entries. A .38 or lightly loaded .357/.41/.44 or any of the .45's .40's or 9mm has plenty of knock down power too.
6 1/2 inch revolvers shine as well.