Corbin has a cannelure tool also. It's called a HCT (hand cannelure tool) and works great. I don't use mine often but it works on everything from 17 to 458 and is easily adjustable. It was about 60 bucks iirc. The wheel is easily replaceable.
www.swage.com
I used it to add a second cannelure to some 45 Colt bullets for my friends 454, worked great.