I was told by my local bow shop, where I bought my crossbow that I can use half moon nocks in my 2011 Wicked Ridge Invader. It came with flat nocks on the bolts. He said the alot of guys are going to the half moon shape for better accuracy. He also said that a bow that is designed to shoot flat nocks can shoot half moon nocks but a crossbow designed to shoot half moon nocks can not shoot flat nocks. Is this info accurate?