Board Thread:Questions and Answers/@comment-118.210.135.133-20130419223818/@comment-3552584-20130420152249

This is the wrong place to ask that, you should ask it on the mod's website.

The railgun still "pushes" against a projectile to accelerate it to extreme speeds. Kickback is not caused by only explosions from propellant, but from the counteraction of accelerating the projectile. The faster the acceleration, the more kick. Also, in terms of game balancing, a weapon that good should have some sort of drawback, hence the kickback.