i shot a deer a few years back using a muzzy two blade and hit back near the rear leg and messed her up so she couldnt run then i shot her again in the ribs slight 1/4 too me but i wanted to put another one in her and the deer layed down and i sat and watched it for about ten minutes looked like it was gonna die and i only had one arrow left in my quiver
Why blame the broad head when you made 2 bad shots?
You still had an arrow left you should have used that one to put the deer down for good.
I have taken a lot of big game animals with 2 blade broad heads including a 2000lb Asian Water Buffalo, put the arrow where it needs to go and it will do the job.