They're overkill for deer but will do a good job. Use them.
In what way?
Many cheaper bullets will expand and shoot through a deer just as well. Save the cost of PT's for big stuff. Game Kings, Hotcores, many others. If it's accurate and expands, it will kill a deer readily.
When everything goes just right, the list of bullet failures diminishes greatly. Some of those C&C's aren't near as likely to "cut it" as a partition is when things don't go exactly right. I like bullets that perform consistently when things go wrong, or "not so right".......bad angles, encounter tough bone by accident, etc.