@Cucoo
Well, it would be more accurate if I said "matter/antimatter annihilation" reactor. You see, it takes all the energy released from the process and uses it as power. There's quite a few sources on it on google.
The other one uses Hawking radiation.
I swear, I can not make this stuff up. :p
Also, when you put "Time needed to fire for lightest projectile", did you mean the smallest amount of time it would take to charge a shot? I didn't quite understand that part.
Edit: Maybe time it takes to leave the rail after "ignition".




