First, make sure your own scale is as well calibrated and accurate as possible with known weights, and check with a second scale if possible.
Second, check the other packages. Make sure you know the tare weight of the packaging as well. The weight stamped on the package should be the weight minus the tare.
Third, take the issue to the
store, not corporate, and inform them of your intent and right to take step four if you've had multiple packs underweight. Depending on the response, also consider step five.
Fourth, contact
MDARD's Weights & Measures. Understand the gravity of what you're reporting, and make sure you're absolutely in the right.
Fifth, take it to
Kroger Michigan Corporate and division head President
Scott Hays. Be sure to mention step four in the communication.