Interest piqued, I went and found the articles more easily than expected.

1 the articles were published in June, August and September 2005, author is Stephen Boxford.

2 parts 1 and 2 give a history of the round. part 3 gives his own experience of shooting it in a Winchester model 70 with a 26" Lothar Walther 1 in 10" twist barrel. Seems his favourite powder was Reloder 25. Send me a pm with your email address and I'll see about scanning part 3 and sending it to you.