Devices and systems for limiting feed volume dispensed into a plurality of tandem feed boot unloaders into one or more feed paths and related methods are disclosed. A core system is provided that are disposed in the feed path through each of the tandem feed boot unloaders in a center portion of an auger supported by a bearing assembly. Feed housings are configured to direct feed into the boot unloaders and into the auger. The feed is moved by the auger as a result of rotation of the auger about the bearing assembly. The core system provided herein limits and regulates the amount of feed that can enter each boot unloader by occupying space within a center portion of the auger that passes through each boot unloader, thus making it less likely that the auger will become clogged and be constrained from moving feed in the feed path.
