I think that depends on what version of the emulator code your server is running. Recently, many new options were added to the Rules that allow you to adjust experience loss as much as you wish.
All of the experience loss settings are handled in the rule_values table. You just need to set the rules there.
Here is a somewhat old post about the rules and some descriptions:
http://www.eqemulator.net/forums/sho...highlight=rule
Many rules have been added since then, though.
Also, you might want to check this post for the corpse/exp loss rule explanation:
http://www.eqemulator.net/forums/sho...highlight=rule