G'day and thanks for the welcome. I guess the "through the same hole" could be a figure of speech, but the point he was making was that the barrel regulating system seemed to work well. Thanks for the suggestion about Kudu, I had thought about contacting Bob, who has done a couple of jobs for me previously but just happened to contact Mialls first. I will give Bob a call and get his input on the idea. And in answer to your question about the .50 Alaskan yes it was at Whitehorse Arms in the Balwyn/Box Hill area. I believe it was built in Sydney on a Aya 12g sxs action.

Ian.