That is a fairly light load, just above the book starting point. I use 46 gr for around 2750 fps. You are probably around 2600 fps at the muzzle. Pushing the bullet faster would probably give more violent expansion and a litttle less penetration.
I believe you are overthinking the situation. I'd rather have complete penetraton along with good expansion. Looks like it worked perfectly to me.
There are lots of ways to kill a deer. Almost any of the loadings from 125 gr. to 200 gr will work on whitetail. Use what works best for you and your gun.