I have examined a number of Charter Arms revolvers, and I do not own one. I agree about the overall lax quality control. That is somewhat a shame, because the Bulldog is kind of a good idea. You seem technically skilled as a gunsmith. Good luck with bringing yours up to par.
As to hostage situations, let the SWAT team snipers manage the headshots. The best you could do in a hostage situation is perhaps to keep the perp from leaving with a hostage; from cover.