Calibration section for the Cabela's XT-1500
a) With the scale turned on and without any weight on the pan, press and hold the "TARE" button until 'CAL-0' is showing.
b) Press the "TARE" button again. The '0' in 'CAL-0' will begin flashing.
c) When 'CAL-F' is shown, stack the two 50g weights on the center of the pan and press the "TARE" button. The 'F' in the 'CAL-F' will flash.
d) When 'CAL-0' is shown again, remove the test weights and press the "TARE" button. The '0' in 'CAL-0' will flash.
e) When the calibration is finished, the scale will reset.
NOTE: If an error occurs in calibration, the scale will try to re-do the calibration starting from step (b).
That was verbatim from the manual i got.
Springfield XD9 Service Model (3450 rds)
Springfield 1911 Loaded Stainless Steel (650 rds)
Sig 556 (80 rds)