i was at gander mountian and the guy said for me to sight in my 10 yard pin (i got my bow upgraded, etc.) and then he said he was gonna show me a trick and that i didnt need a 10 yard pin. so will an 10 yard sighted-in pin hit the same at 20 yards. i tryed this out today and found some truth to it. is it because the arrow is still on rise when its at 10 yards and arcs bak at 20??