You wanna be missing that shouldera and You wanna be using a heavier arrow than 500grn, If you're shooting Trad I'd go for more in the region of 600grn, with a good solid 2blade like an Outback Supreme or STOS and even a 3blade Woodsman. I'm shooting a 54# Longbow, with around 590grn-615grn depending on which BH I use and that will pass clean through on a behind the shoulder shot.