Thanks all, for the great leads !
Just ordered some 2 7/8 10 Ga. Brass from Track, along with the spec. 9 Ga. wads.
Going to try some of the Remington 10 ga plastic from Ballistic Products ( cut down, of course) with standard 10 ga. wads, as well. Plan on fitting an "Ablative layer" ( Paper maybe ?)in the area where the powder rides, and maybe they will last a while.
Having priced bar brass, I don't see how anybody can AFFORD to machine and sell a 10 Ga. case for $8.50. Will be glomming on to some of those too, ....pronto.
Will let ya'll know how this plays.
GTC