last Saturday, i shot a doe at 23 yards. was very happy, being the first one this year. but i have a couple of questions.

i have been practicing none stop for the last couple of months and am very accurate up to 40 yards, won't shoot at an animal over 30 yards though. broad heads are dialed in, NAP SplitFires. when i shot this doe, everything went to plan. was able to draw back without her seeing me, had time to go though my shooting tips in my head and placed the pin right behind the shoulder and released. lost flight of the arrowhalf way tothe deer.never saw where i hit her. waited for 30 minutes and went to see if there was any blood. there was good blood and no arrow. so i followed the blood till i found my arrow about 10 yards away fromthe spoti shot her at. the arrow only had bloodand hair on the front half of the arrow. bad penatration. at that point, iwent back to my stand and called for help. help came and we sarted tracking an hour later. great blod and found the deer 80 yards away. to my suprise, i hit her in the neck. i couldn't understand why i hit her there. she flintched a little upon release, but not that much. what really suprised me was that my arrow didn't go all the way through. nothing but meat. the broadhead was still sharp and the pointlooked and felt brand new. i don't get it. why did it only go half way in and not a pass through. i shot a Golden Eagle Obssesion with a 70lbs pull andcabon arrows. has this ever happened to anyone?