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1. Pulsed power
2. Rail damage: gouging by the armature and sabot (a device that holds the projectile in place while in the barrel), erosion, and warping.
3.  Projectile design

Problems being solved at the University of Texas’s IAT and Center for Electromechanics (CEM):

• Penetrator designs that achieve deeper penetration for less energy than conventional ordnance
• Non-discarding sabots that reduce parasitic penetrator mass
• Improved 3D coupled EM, thermal and stress finite element computer models – and a Beowulf cluster to run them.
• Railgun designs that improve barrel life
• Reduced muzzle flash and noise
• Improved ratios of system mass to performance

Back to how railguns work --->>