The boy scout camp I went to growing up had us shoot into hay bales, but they were very weak bows. How do carbon shafts hold up against hay bales when they are shot out of new compound bows? I cracked a shaft when I shot one of the corner targets on a foam block that had that moved. The arrow went out the side instead of the back and that's all it took to put a nice crack in the shaft. I thought it wise to ask before trying out shafts and ruining more arrows.