I shot a large doe last year at a 90 degree agle through both shoulder knuckes with a 100 grain NAP Shockwave and it destroyed both sides. She never went far though. Arrows went almost all the way through
How much kinetic energy are you shooting to blow thru two shoulder bones (not blades)?
The reason I ask is , last year I was shooting 70ftlbs of kinetic energy and I blew thru one shoulder bade and the arrow came to a dead stop when it hit the opposite shoulder bone. The shot was 15yds with a NAP spitfire.