It worked great with my 5mm shafts last year. This year I changed to a 4mm shaft @ 650 grains with a 150-grain single bevel broadhead, and they go right through. I'm not sure if that's an endorsement of my arrow set-up or an indictment of this target (my bow is only at 65 Lbs). Either way, I don't recommend with an arrow set up like mine.