Re: damages when charging capacitor?

i was thinking maybe a voltage divider to change the voltage? I need my coilgun to be consistent thus i need the voltage in the capacitor to be the same each time.
I'm currently using a transformer that is suppose to drop ac main 118-120v ish to 108-110v. That is connected to a bridge rectifier which converts it to ac. I need my coilgun to be precise and charging to be not too slow. I'm thinking if i use diodes and ac main voltage flucates my coilgun will be affected. I have 3 35w rheostat, do you think it's possible for me to hook that...

I have a couple of 100v 10000 uf capacitors used for a coilgun. I need a 100v powersupply charger but i can't get the voltage to be at 100, it's usually about 105ish, if i use 105v to charge the capacitor but stop charging at 98 ish does it damage the capacitor on the inside? Sorry I am new to these things, thank you.