I have been practicing with my 160 cutthroats on doug fir shafts, shooting at my shot out reinhart deer target and have encountered a serious problem with them. When shooting field tips, on the occasion that an arrow would hit a pinch low and hit the internal metal support for the target, the point would just flatten a bit and the arrow was easy to remove. With the cutthroats, the arrows STICK IN THE METAL and are a royal PITA to remove. An absolutely fantastic head, elk beware!