4mesh,
thanks for the help, it's very much appreciated.
Yesterday I played with it all day untill I figured something out to make it work.
I modified a .335" bushing with a drill bit that had about a 45 degree angle per side tip on it.
Worked out perfect. I chamfered that angle with a case chamfer tool to blend it to the bushings bore too.
I used a Hornady 480 Ruger / 475 Linebaugh seating die to hold down the bushing, which fit perfect in the seater stem bore, and the case fit into this die too!
Took me all **** day to find something that worked simple enough. Only thing else I had to do was drill a .350" hole about 1/4" deep up into the adjuster stem on the inside so the case neck wouldn't bottom out as it came up through the top of the bushing.
I actually used this hole itself to step down the case mouth, .050" - .100" in length for easier starting into the bushing.
A gentleman at Redding indicated .010" per step on bushings at maximum for necking down.
Well I fixed that problem easily. Tapered that bushing entrance in the drill press like butter.
Flip it over and it still works like normal too. I never cut out beyond the edge so it's still square on both ends of the bushing.
I'll post a pic of my success and what I used as soon as I load the pics up.
I did start at the wrong end, as you indicated, and ran into the problem of "trapping" the brass in the shoulder. I didn't have anything large enough to start pushing the shoulder back at the bottom first. I'll see what I can come up with to start down low and progressively work up though, it should make for a much prettier case when I'm done. Right now it leaves a bulge in the middle of the shoulder which might just barely let the bolt close on chambering it.
It bulged below the shoulder/body junction but, I never let it get any larger than .565" in diameter... the chamber is .570" at that point there. It looks ugly but, there's no doubt it would look pretty after firing though.
Send me some pics of those forming dies etc, I'd be very interested.