Is that the HyPAcS? (or however you capitalize it)
yea i just gave it a trail. it was faster than making a new weapon from scratch. the HyPAcS isn't technically a rail gun, its more of an antimatter delivery system. Generally an anti turret weapon. i like the effect so it can keep the trail. might do a traditional rail/coil gun with the same trail effect, but for a general purpose role.
they don't look like railguns to me. they look more like missiles.
a technical limitation. cant just spawn the whole trail in one pass without a major slowdown. so the trail is created in sections, one per frame. faster guns require more particles which is a slowdown. if the gun is slowed down a bit it reduces a factor in the performance equation. its still somewhat slow, so i proibly need to use cycle and not swarm fire the things.