Ed, thanks for the info! As a matter of fact I am converting my cases to use shotgun primers with the insert, so that is definitely going to limit my powder selection. I don't want to limit my powder choices to something where I need to have duplex loads just for reliable ignition.
I am thinking about loading up some RE-17 rounds for the simple fact that it will be easier for me to buy that powder locally... 1 pound of powder is much more affordable than 7 pounds + hazmat shipping fees. Hard to do all of this on a tight budget!