I'd shoot a heavy for caliber tipped match bullet, 75 to 88 grain hornady or sierra. They work wonders.
Shoot a mono if you want to punch both shoulder bones, but be aware that they kill slower with behind the shoulder shots.
60 grain partition is a good one too.
My son killed his first deer at 5 with a 75 amax out of a 223 AI. It worked very well
