I would think you would have great difficulty unless you got one specially made. A suitable substitute is a small size bowling ball. Of course the actual ball can be of any size you wish and of any material (except metal) and starting with a pool ball can be quite enlightening! Have you studied Taiji ball before, or are you just coming in to it?
Very best wishes
When asked about breathing in Tai Chi, my master replied, "Yes, keep doing it"