Not a hard object, but ....
I have seen more than a few prairie dogs "launched" in my day ..... large centerfire rifle, light bullets at maximum velocity, and the bullet placed just under a p-dog......... or several of them clustered together. IIRC, my Uncle used a 300WinMag and plastic saboted "Expediters".....
I have shot p-dogs using Speer's .277 90 gr TNT HP and killed p-dogs that were next to the one I shot, with bullet and/or bone fragments..... or maybe it was just concussion ..... they were dead either way.
TheGolden Rule of Tool Use: "If you don't know what you are doing, DON'T."