to make it proper hardcore you need to change the players health,
my clan server has it at 45 as u can see;
set scr_player_maxhealth "45"
thts all you need really, but you should also change the dog settings so they are not
stronger than the players, you could use the following;
//******************************************************************************
// Dog Settings
//******************************************************************************
set scr_dog_count "8" <- How many
set scr_dog_hardpoint_interval "180" <- how often
set scr_dog_health "40" <- set to below the players health.
set scr_dog_max_at_once "4" <- number of dogs at same time
set scr_dog_time "45" <- how long they last