You won't save much money by reloading shotgun coyote loads but it is fun to reload them. You will have to hand pour the shot into the shells because # 2 lead pellets and bigger will not feed through the reloader like bird shot does.
http://www.ballisticproducts.com/Lead-Buckshot/products/65/
When you get to the bigger pellets one or two size differences make a huge difference in the weight of each pellet. Lead BB pellets are .180, Lead T pellets are .200. So.20 does not look like much difference but the T pellets weigh 50% more than the BB pellets do. The lead BBB and lead T pellets are hard to beat for penetration and pellet count.