I believe it was just over a thousand. 1011 rings a Bell ( ). He kept pretty meticulous records, I think. Who knows, really, though?
There are certainly quite a few others with those kind of numbers, especially the guys involved in the big culls, and the guys like Taylor, with a long, long career. Bell's career was fairly short, and seemingly lucrative.
I don't imagine there are too many guys out there that did that kind of killing with such small bores though.