The 30 carbine was designed as a military sidearm/self defense load. I personally wouldn't think twice about taking a deer with it, but shot placement is critical which is why I wouldn't recommend it for that purpose. I don't reload cause it's not fun chasing those iti biti casings.
shot placement is critical with any cartridge!!! i have seen deer shot with large caliber rounds like 30-06 and 35 rem that ran for two days before the final kill shot was fired.
when I was poor back in the seventies I shot several deer to feed the family, (not proud of this but ya have to feed the babies) with a headshot using a 22mag. they never took a step before dying.
my point is any round is capable for deer if you have shot placement
Other than That, Mrs Lincoln, How was the play?