He was a Brit who came to Australia to work and stayed. Quite knowledgeable fella, particularly the pre-internet era when you didnt have all the info at your fingertips. You could write into Nick and get answers. I got load data from him on 416 taylor, 460 wby and opinions on boito shotguns in the 90's. Generally the advantage of Australian based hunters or writers is the sheer volume of hunting experience available. An American or Euro hunter makes an opinion on a bullet if it works on 4 or 6 hunts. An aussie will shoot 50 things with two bullet types and still isnt sure which one he likes most
harveys reloading data I think includes data from other sources, its not all his own concoctions. He lost favour with some gunowners when he came out saying he didnt support use of semi-autos when we were getting them banned in 1996. More than a few gun writers, shooting bigwigs etc towed the same line.