No offense intended, but, I have come to believe that running a Mono bullet through the chest of an animal and expecting a blood trail is not bright.
The just do not normally make a big hole in the hide. They tend to make a very big mess of the inside of the chest. If you disconnect the plumbing inside the chest, blood pressure goes to zero instantly. This leaves your only ally for a blood trail being gravity. If you just scrambled the contents of the chest you have all sorts of debris to plug holes.
I have seen this with .243s, .270s, 30-06s and .50 cal muzzle loaders. I have seen holes through the shoulders and hide that I could easily stick a shovel handle through not bleed when the heart and lungs are destroyed. I have yet to see one of them make it past fifty yards give or take though, even when the heart is left intact and connected. I have never seen an X, XLC, TSX or TTSX not expand. I have seen a number of caliber size holes in the hide with massive internal damage though.
