Well CoC has hitlocations indeed, if you use those in the "Cthulhu Now" sourcebook. Everything is here, one have only to seek a little bit.
We can hope that the new sourcebook will solve this problem.
Thanks to the Now rules the elephant problem is not anymore existent. According to the CoC 5ed. rules it has 45 HP. This is about 12 HP on its head. Average damage of an elephant gun is: 14,5, not counting special hits. Killing an elephant? No problem, but only if you use all CoC rules.