Aussie's have been helping cleanup on game birds since 1985. They're primarily flushers, but herding flushers, watching where I am and trying to get around the birds, heading them off, and holding them until I'm in range. This is particularly effective on running pheasants in sagebrush, and chukars racing up the steep rocky slopes. A former girlfriend used to say that it's really not fair to the birds to hunt two Aussies together. Hahaha.
I'll put up some pics of my drillings (3) and J.P.Sauer 16 gauge double. The drillings have taken many elk, whitetails, muleys, and antelope. And turkeys. I'll PM them to you is I can.
Turnbull will do fabulous restorative metal work for you. I've got connections for wonderful English walnut and a stocker or two in mind when you are ready. BTW, send me a bunch of pics of that old beauty.