davidsan,
I anneal the case necks of the 30-30 brass. I then size them in a 7-30 Waters die just enough to allow them to chamber and the T/C close. The brass will actually have two shoulders. I then use a minimum load of whatever powder/bullet combo that I plan on shooting. Much of the time, this load will actually be fairly accurate. When I first started messing with the Waters over 20 years ago, I tried the fast burning powder method. Didnt like it and went to the method I just described. Since I cast bullets, I use a 7mm cast bullet to do the fire forming. And, one of my most accurate loads is with the cast bullet (287346 @ 135 grains). I rarely shoot jacketed bullets in anything anymore. Finally, I just looked at a couple of boxes of 7-30 reloadscast bullet of courseand one box has been reloaded 15 times and the other has been reloaded 18 times. The 30-30 case is most easy to reload and very durable from my experience. Good-luck
BCB