The expandable cup allows for dipping larger shot loads when needed. The Lee adjustable shot dipper is a great tool for reloaders looking for tool to help load shotshells by hand in small batches. This tool accurately measures lead, Bismuth, steel shot, tungsten, hevi-shot and any other shot that you could think of filling the cavity with. The telescoping cup adjusts from 7/8 to 1-7/8 oz and is calibrated for lead shot. It works perfect for large pellet sizes.