Re: Fire forming wild cats
In looking back over to the post of Fifty's you referred to, that is the method I use to form the cases for my Contender in 7x30 Waters.
For the most part I simply use range brass as most don't reload the 30-30 and there is usually plenty of it to be found. I have found it almost completely eliminated any split cases that I had seen using other methods. Also as with Firty's results in accuracy I also see the same thing as well. The FF loads shoot just as tight as the final rounds.
That is the only one I load for which has the rimmed case, that gets any real resizing when fired. With my 30-30 AI it's just the same however, if I run the cases through a .303 Brit sizer to expand the neck just a touch to give me the false shoulder, I get great results with them as well.
Like has been mentioned in all of my AI chambered barrels and the Waters, I do see some shortening, but it hasn't effected much if anything IMO, as they all still function and group the loads just fine. Once formed I simply trim the mouths to square, and give them all a consistent lenght, and go on about my business.
Mike / Tx
"Heck why would I lie, most folks don't believe the truth when I tell them"