I just got a video of a guy without arms laying on the hood of his car shooting an autoloader with his toes. And even reloads with his toes. I guess it can be done if you want to practice long enough.
Interesting video. If anyone wants a copy, send me your email in a private message and I will send it to you.
It may be on YouTube. I don't know. I live in the sticks and my Internet connection is too slow to watch streaming video.