What I like to hunt with for extra challenge is either my flintlock or sometimes my handguns I use all my handguns with nothing but open sights and my flinter is like those made in early America before the revolution.
One bragging animal I killed was an antelope 6 years ago with my 4" S&W 44. One shot at about 20 yards, but what made me feel good was the fact that I had to crawl over 400 yards to get to that range and was never seen. There was a very shallow wash that I was able to crawl up in, and it was a long stalk, but it was worth it.