With the Egg, on a stock Assault (SETUP CORRECTLY
), you should have no chops or not be able to outshoot the Egg. I use a Z-boarded Egg on my Matrix and can get up to 18bps with it. If you put the Overdrive board in the 80 you may be able to outshoot it.
It doesn't matter what tank you use, the inline regulator is able to reg the pressure down to below 200psi so whether you have a high pressure or low pressure it's no prob.