I am glad to hear it's bothering you. Not for the guilt, but because it's an indicator of your ethics.

Sooner or later things don't go just right. If it hasn't happened yet to you, you're turn will come. I've not lost an animal with a rifle, but smacked the shoulder blade of a nice bull with my bow a couple years ago and it still haunts my thoughts.

“You never need fear a man, no matter what his size. When danger threatens, call on me, and I will equalize.”
Samuel Colt.

�Common sense is genius dressed up in work clothes.� - Ralph Waldo Emerson