Cap Charger?

[ausi319]

I'm making a coil gun and everyone says to use a camera circuit(making a different one but to the same extent for a military and because i want to prove i can)

I have 10 capacitors but the camera circuit to charge it. I used the camera about 6x and it got fried all of the times... i need to find a better thing. maybe more voltage like 500v or something around that.
I have no idea why it keeps shorting and failing me. If you could help me with this i would appreciate this

 

[neon]

what is the capacitors rating in volts?

 

[ausi319]

well only prolly 330V.. at about 120upf. They cant take much more..
i was just wondering i dont want to use camera circuits anymore and would like something else to use instead.

I'm using the camera circuit again its an automatic charge for flash
i'm going to put a switch on the negative side to see if that helps so i can keep it on to charge them then turn it off to fire so no electricity goes back into the circuit.