I have got some good deals on ebay on many lead items, thats were I would try. Doing a quick search I found 3oz round here
http://www.ebay.com/itm/5-3oz-Round-...item2a2d132c47
Also I use to have a round mold and poured my own, I will have to look to see if it is still around?? but that means you will need to make your self. Dasy if you have never done it before and you can make what ever you want as far as hooks and colors.