In one example of a vertical load case packer, guide rods provide horizontal adjustment of a tipping conveyor assembly to position the tipping conveyor assembly at a desired distance from the at least one bucket assembly. In operation, an indexing assembly advances case(s) into the tipping conveyor assembly. Side belts in the tipping conveyor assembly move and grip the case(s). A pivot rotates the tipping conveyor from a position wherein an open end of a case is oriented upwardly to a position wherein the open end is oriented horizontally to receive the product. Each bucket assembly receives product and delivers it to a case. A sliding bottom plate in the bucket assembly supports horizontally loaded product and advances the product into a case. A pusher plate prevents product from withdrawing from the case as the sliding bottom plate is withdrawn and further inserts the product into the case if needed.