Looking at it even closer this morning, its got graded forearm metal on it instead of typical sterlingworth metal. I doubt if the serial number match in other words, unless it was sent back to Savage late in its life and some work done on it by the factory. I've got a Fox SW with a ejector beavertail forearm and it also has graded forearm metal on it.
tut are you talking about the cabelas gun ? what do you mean graded forearm metal? Looks to be the regular ejector sterly round lug sticking out of the bottom of the forearm ?
How did you ever make out on the math you used to calculate you have xtra thick barrel walls on that other Fox/ CB