Yes, google Matt Paroz at LRP "Long Range Precision". He is in Sydney and builds a lot of the leading target (and hunting) rifles in Australia. I know he has numerous 280AI reamers.
I used to use Dennis Tobler. His son Robert runs the shop now I believe. Top quality barrels, chambering and fitting as well as the usual 'smith work, action blue printing, bedding, barrel channels, triggers etc.