Windcutter, thanks for your insights. As to the internal cleaning, they were washed with hot water, detergent, and nylon brush all the way to the base before tossing them in the vibratory cleaner for a few hours. They look like new brass, inside and out.
I understand that I can't start at 1000 yards, that's just a goal on down the road. I figure I'll start at 50 yards move to 100, to 2, 250, 3, and so on. I know that I can get 70 gr. FFF, card wad and bullet in the case and chamber the round, but that seems to be an awfully lot of compression to start with.?? I just figure some of you with much more experience would have a better idea of where to start.