Quote: the pressure would exceed that need and the cases would not extract.
John, your problem wasn't pressure, it was that the case head area was not cut to the proper size (diameter). A lot of the Miller Short have the same trouble, because of the same thing.
I run my 33 ELCO Max, 240 gr bullet, pretty hot and have even pierced a primer or two at even higher velocitys w/o case sticking.
I've shot the whole 8 day Spokane match with one case and then some other matches w/o any sticking. After a few hundred rounds, they will get a little tight but, still extract ok.
I agree that the 25/20 Win case is a weak one but, in a strong action, like a HW the cases will last a long time. Elaine has only had one case seperation in over two years, running a 183 gr bullet in her HW at 1450 fps, using 10.2 gr #9.
I also make 32/20 out of 357 Mag cases but, I haven't need to use them in hers. I gave some to a guy back East and he has had a lot better case life in a LW but, LW's stretch and I wouldn't recommend a LW for a high pressure 28 cal.
I offered some of my 357/32/20 cases to Jan to try but, he said that he'll never shoot it again.
Frank