Coil Design
-The most difficult and important part of the design

Factors to be taken into account during the coil design:
1)Inside diameter must fit snugly on the barrel or the firing tube.
2)Outside diameter should be large but must be within the constructional limitations.
3)Coil resistance should be small.
4)Saliency ratio must be high for effective coupling of the electromagnetic field and the Ferro magnetic projectile