Got my first one when I was 15... Little spike that i took with my dad's Ruger No. 3 in .45-70. Ridiculously large caliber for such a young kid, I know but it was a light gun that I liked to carry. I didn't even feel or hear the shot because I was so focused. I double lung'ed him and he ran about 25-30 yards before he dropped... although in all the excitement, I couldn't find him! I'd left the scene of the crime to try to find my dad and by the time I got back, my uncle was sitting close by. Unbeknownst to him, he'd sat down about six feet away from my downed deer, and then had a heart attack when he looked down and saw it! HA! There were handshakes and backslaps all around and some fresh venison in camp that night.
To hell with the loss of my virginity, THAT was the day I became a man!