Interesting photos, thanks. It appears that mine was regulated for the lighter load, but shows the same "max" load as in your photos. I assume that whomever bought the gun originally specified the lighter load to have WR regulate it for what they wanted to shoot. My handloading friends are trying to track down the correct loads for this rifle. Again, thanks for you input. Pretty clear that 32-40 Winchester was the original chambering. I appreciate all the help, guys. Dave