Thanks for all replies. Yes I did aim for the heart but the day was windy. I did lot's of practicing the day before but still the wind blew the bullet more to the guts. I guess I will stick with this technique. The deer zigzagged for more than a mile. It took a while to find. I found it in some tall grass . There was blood 20 feet from the deer but nowhere else.

Thanks for the welcomes.