I carried 30 out of Marquette, which is blocked 12 minutes +/- more than FSM. 1200 lbs cargo 3200 lbs fuel, with CLE as an alternate. The FMS had us just over 29000 and the pda (computer wt and balance) put us in at 28800. I know we had a couple of half weights on board. I'm pretty sure the max ramp wt out of MEM would be 29200