couple of extra thoughts:
1) Ames pillow target stuff best over my 10 yrs of use with shrink wrap throw outs like posted above. (Sears, or anywhere that gets stuff on skids, it's ALL shrink wrapped today.
Shrink wrap will stop anything if stuffed tight. It will stop shafts so fast, if you use helical fetch, you'll have to screw your field points back tight each shot!
2) if you buy the animal shapped targets from U-Stuff-It, the legs, ears and antlers require lighter guage material... they suggested and were correct that the store shopping bags and a blunt shaft to shove em up into the small parts TIGHT is the best approach...then the body can be shrink wrap stuffed!
Hope that helps.