James B, I think the Lee Collet Die is right up your ally. I have used it almost exclusively in my 30-30 with no troubles I can attribute to the die.
As I began shoting with my 38-55, I am using 375 Winchester brass that was originally full length resized by my friend who shot the brass in a Ruger #3. I couldn't step out back with the stuff without a cleaning rod at hand, untill I began to run the laoded cases into the resizing die to get them to fit neatly into the chamebr. This got me to wondering if the trouble folks have with sticking brass is a result of tight chamber dimensions. Know that untill I began to "resize" the loaded brass, I was having to really push the brass into the chamber to get the action to close.
Now more directly to the collet die, I loaded this brass untill it began to show incipient head seperation signs. Must have been something like 15 or more resizings. I had annealed the case necks before I began to use the collet die, I wanted to see how long the brass would last. I found that after about 3 or 4 full power loadings I woud have to full length resize to get the same neck tension on the bullets, as the brass is worked it springs back less and less and eventually you can just push a bullet into the neck with finger pressure. I reduced the size of the mandrell to solve this problem (A Lee recommended solution)
I won't use anything but the Collet die in my 30-30, I wish I hadn't fooled with the mandrell, it was perfect for cast bullets, but $5.00 will solve that. I wish they made collet dies for cases like the 38-55 and 45-70. 357 and 44, if they did it is the only style die I would use. Because the die works against a mandrell, cases like those won't work, but the collet works perfectly on bottle neck cases. Give it a try. If you are shooting only jacketed bullets, the reduced size mandrell is what you want, with cast the shipped mandrell is fine. The cost of the die is cheap enough to try out, if you don't like it you ain't lost nothing, and I assure you, if you have any troubel with case ejectionm fit or any of that crap it won't be because of the die.