ACC, I will tell you what has worked on coyotes for me and it is a 223 with 50 gr bullets and a mid load of TAC powder. I don't think the 32/20 will put enough shock in an animal that size to give you a DRT, although it will work, just not fast enough to keep them from dragging off to be a front poarch ornament. I bought the 50 gr bullets from Mid South Shooters Supply in a bag of 500 and they make a coyote "slosh" when you pick one up afterwards. I shoot them in my Mini-14 with a 20 rd magazine and never had one run away after a decent hit. It is a shame that you are having to deal with the problem but livestock needs protecting. If there are any small children in your family, they are clearly in danger as well.