I have taken dangerous game, both Buff and Elephant and I had a problem finding an insurance company to cover me. In the end I used a company called Hayman, who insured me for 5million medical cover, but only 5k for death. Evidently at the time they likened it to being the same risk as a formula one driver.
I have recently used them to cover me for my recent trip to SA about 2 weeks back, although I was armed with a camera this time.
Best
Sikamalc