I will not argue with your knowledge about Papa Bear. "HOWEVER"!!! I know he used a 70# to take his African Elephant.
When he made that safari, he took Authur Godfrey along with him, and the Authur Godrfrey radio hour was brodcast every morning from their base camp. We were glued to every word as he reported the days events and had daily interviews with Papa Bear.
Now I "KNOW" you guys know more about Fred Bear than I do, but I heard it "from his mouth" that he took the Elephant with a 70# bow.
In most pictures he is standing next to a huge Bear or other animal, giving him the appearance of a man of smaller stature than he was. I have a picture of hem with me and my "X", and he is about a whole head taller than me. He was a "man's man" and capable of shooting over 70# if need be.