I'm continually amazed at the number of malfunctions I see at matches. I shot Speed Steel at Tri-County Gun Club, Sherwood Oregon today. The 22s are always having problems. One guy was shooting really well, but having to clear his gun on maybe three out of five strings. Another guy shooting a 9mm decently had repeated FTE.
I'm feeling superior shooting my Glock 17 with store-bought ammo. The big risk factors seem to be 22s--they all seem prone to failure--and homebrew ammo.