As a new guy, I' ll chime in on this one. I used to use a 125 grain 4 blade muzzy. Tough head. Took a 215lb Boar with one, complete pass through the lungs. Also took a yearling doe with same head. I couldn' t get her to stop walking and led just a bit too much. Penetrated both shoulder blades and exited.

I now use a 125grain 3 blade Thunderhead, better flight characteristics for me. Took a near vertical shot. Severed spinal column, broadhead remained intact. Good enough for me. All animals shot with a High Country Safari at 80lbs.