As the deer entered my shooting window between the trees he was 15 yards moving left on a normal walk, mostly broadside but quartering to me slightly. My bow was up, fingers on the string. I concentrated hard behind his shoulder and began a steady draw, he saw the movement and stopped perfectly centered in the opening, the fetching went through the air and appeared to hit the buck very tight behind the shoulder. At the impact the spike dropped low and spun hard to his right. As he turned I could see a lot of the arrow sticking out, honestly, more than I would have liked. Multiple deer behind the spike spun and crashed through the woods. I never noticed any of them following behind him, I was concentration on the deer I shot so much. I replayed the shot and rethought it as I waited for some time to pass. I wondered if I didn't draw back fully and lost penetration, wondered if I hit more of the shoulder than I thought, I was unsure and light was fading. I assessed the impact site, some hair and some blood, nothing overly exciting. Initially his tracks were easy to follow as he ran, so I followed them. I slipped along quietly and found my broke off arrow shaft in 20 yards, more of it than I would have liked to. Maybe 6" missing measuring the broadhead too. It was tough to call so I decided to wait over night. It was clear and cool without any rain in the forecast. Morning would come slowly...