I'm interested to see as well if anyone has experience with this. However there are some problems with trying to use 5.45. Softpoints group like shotgun blasts from what I gather. HP's don't expand like an HP should and do not tumble (as well or at all) like the FMJ does. Does your state allow hunting with FMJ?
"The way of the warrior is death, this means choosing death whenever there is a choice between life and death. It means nothing more than this, it means to see things through, being resolved."---Yamamoto Tsunemoto's Hagakure