The 100-round helical magazines on Calicos use a sort of clock-work
spring, and thus has to be "wound up" before it can be reloaded
again.  On the back of the magazine is a knob that has to be turned
14 (or is it 15?) times to apply the tension to the spring. Push
the center of the knob to release the tension (good for storing a
full magazine, because they take forever to load). Time to wind:
12 to 15 seconds, as little as 8 if you have some sort of crank
attached to the knob.