Wow. Lots of folks not reading through the thread before posting a reply.
Just to throw my .02 in, I have used an FMJ on deer one time, when I was very young, out of ignorance. We lived in a very rural area, I was home alone, saw a deer out back, grabbed my 742 and the first cartridge I found that would work in my rifle, which my dad later pointed out was from a belt of surplus machine Gun ammo someone had given him. I assume it was 147gr M80?
Anyhow I shot the doe at about 80 yards through the shoulders, and she made several hundred yards through very thick brush, leaving practically no blood before piling up.
My dad was not pleased.