Sometimes i wish this site was like Facebook because there are so many posts in this feed that i would like to "like" ... good, honest comments everyone...
and just because you're shooting at a downward angle and you're rounds are ending up in the dirt that doesn't mean you didn't nick the flesh and unethically wound the deer.
secondly i think its bold of you to say your rounds were ending up in the dirt and not at little Johnny's tree fort because you said yourself you didn't see dirt fly and by the sounds of how "good" of a shot you are i wouldn't scrap an alright rifle just because you're frustrated (i will start the rifle fostering foundation if thats the case and you can send it my way)
i would head out to the range and and blow through a shit ton of ammo till you and you're rifle are a better shot.
Blunt but honest.