I switched to the Hornady American Whitetail .243 100 grains in my 15 year old son's deer rifle probably 5 years ago. I found that they leave real good blood trails for the most part. There is usually lungs laying in the spot where the deer was standing. My 11 year old daughter is shooting them as well with good results.

I've heard other people say that they didn't leave blood. I don't know what to say. The seem to work for us.