Dose anyone know where I can get a Historic accurate bronze/brass Corinthian helm that is atleast 16 ga..All I can find is 18ga. and Manning Imperial's $2,200 one which is out of my price range.

Joe Piela of Lonely Mountain Forge, perhaps? He did mine, and a few other good ones. Fair warning, and not to be sounding snide, but 18ga repro Corinthians generally weigh MORE than any originals, so they're already too thick! But obviously if you need a thicker helmet, that's what you need.

Good luck!

Matthew