Your pic of the rifle with the Leupold 4X Mountaineer mounted brought to my mind one of the same era that I mounted on the first custom rifle that I ever built; It is a 240 Page Super Pooper in a commercial FN Mauser action with a P.O. Ackley five land and groove barrel. I mounted a 6X Leupold Mountaineer and couldn't have selected a better scope for that rifle and caliber. That rifle has been from South Texas to the North Slope of Alaska. It and that scope has done every thing that I have ever asked. It has taken Mule Deer and Antelope in Nevada, feral hogs and White Tails in Texas, Caribou in Alaska and Prairie Dogs in Arizona, Utah, Wyoming and Montana. Oh, I forgot the Rock Chucks in Utah. Yeah, the accuracy has dropped off, but I have more or less retired that rifle. I can't bring myself to re-barrel it now. It like me is all but out to pasture.....