The Magellan High Conviction fund has returned 16.18% over the past 3 years, 14.69% over the past 5 years and 15.70% since inception (2009) in a very favourable market; though still an outstanding result.
Anything above 9-10% p.a would be a terrific result over the next few years. I don't know how the markets will travel in that period though, so we'll wait and see.