Sarg- I got email and sent a reply.The Proparms cases I
want to find is just to pass them on to others with
primer pocket bushing put in. Just going to charge for bushing.
That way others can do the 12GA FH long case.

Daryl-- 28ga groove diameter is .550", same as our 550 Magnum that
I tested in same gun. COTW also says 28ga normal bore .550",
there are co making 550 barrels ans bullets now.
28ga rim is .680". Should be no problem putting it in Ruger as they do
500NE in Rugers with .660' rim and some 577 with bigger rims.Ed