That would depend entirely on your draw length, best to go to a reputable shop and get measured up as it were!
Here, just found this:
That's me destroying a polo at 70m with my recurve

......with a Mongolian I'd be AMAZED if I got three anywhere near the boss!
Edit: The analogy they use is imagine you are holding a bucket of water - dont actively try to let go of the bucket just relax and stop holding the handle, it will do the rest, same as a bow string.