The Caldwell Mag Charger Rimfire Rotary Magazine Loader is the fastest T/CR22 and 10/22 magazine loader on the market. The Magazine Loader is constructed from durable polycarbonate, the Mag Loader can handle daily use! The Mag Loader features an ammo hopper that automatically orients round for loading and also holds up to 100 rounds of your favorite 22LR ammo. NoteStep 1. Load loose 22LR ammo into the hopperStep 2. Put 22LR Rotary magazine into the loaderStep 3. Twist the Loading Knob