Again your math/logic is a bit off. No one starts a trip at 0001 and ends at 2359 to get a "solid" day at the beginning and end of trip, so you can't simply multiply or divide numbers by 24.

Also reserves aren't always doing 4 day trips. I know reserves fly all the time, at every regional, but you aren't getting per diem when you come back home every night to your crash pad.