See if you can find any of the South African .308 surplus out there. Almost as good accuracy-wise as the Port, but it dosen't have the steel jacket. It can be hard to find now, but it shows up every now and then.
The new Aussie surplus may be a possibility too, but I haven't heard whether or not it has a steel core or jacket. Once it starts to get a little more widely available, you should start seeing reports on it.