Allen Carr has made a 577 nitro Express 3" From my 416 Ruger NO 1 for me. He has made a splendid job. And is in the process of building me a custom 530/505 Woodleigh bolt action rifle. He does incredible work! Highly recommended. Full of experience and sound advice. Have been to his workshop which is out back of his house, awesome! Amazing setup. When I drove down to pick up the 577(I live in Auckland, Allen's in Wellington). He showed me a rifle he custom built for a overseas client (which I had seen in a magazine) a 500 Jeffery bolt action, and a beautiful example of the quality this man produces. Not many people are exceptional at woodwork and metal machineist.
I will take some photos of the 577 and post them if you like? And tell me what you think?