See,
You ended up about the length I did too. If you use H110 or Lil' gun or AA1680, there is pretty good flash out of my 12 inch barrel and out of my old 16 incher, the 19 incher shows no flash with any powder. Try shooting a 200 grain cast bullet on top of a case full of pyrodex if you want to have some real fun! Concur with your comments on the fox ridge chamber, that is why I got the Coyote barrel...for less than fox ridge at the time.
regards,
graycg