Abstract: A calibration method for a volumetric metering and blending device which involves the use of a memory base to calculate and control the speed in which an auger dispenses each quantity of ingredient into a hopper. The method involves operatively connecting the memory base to each of a plurality of ingredient hoppers which include feed dispensing augers, with each ingredient hopper being in flow communication with a central weighing hopper. To pre-calibrate the desired speed for each auger necessary to dispense a premeasured quantity of feed into the central hopper, a premeasured quantity of feed is dispensed from each ingedient hopper into the central hopper with the number of turns of the auger being recorded in the memory base. This value is then converted into a revolutions per minute figure for each auger, and by regulating the speed of the feed dispensing augers, the correct ratio of ingredients is dispensed from each ingredient hopper into the central hopper for producing a feed mix.