We can't use the .223 pistol for deer hunting but we can use the .223 rifle for deer hunting. The pistol has to be .24 cal or larger, 100 grn bullet and the cartridge has to be at least 1.25 ".
The .223 is very small for the whitetail here in this state anyway. I know some that have used it but I have also helped several track a "GOOD" hit deer for hours and not find it. Why not use a larger cal.
Mike