yeah. so simple and yet, so confusing.
It almost sounds, to me like you might be screwing the die in, way too far, at this point? If you do that, the case will go up into the die as far as you can force it, and yet, the handle isn't as far as it should go. And, you don't (and can't) get caming action with just arm pressure, alone. IF you are not getting the complete stroke, it won't toggle over.
This is a situation where a thousand words doesn't compare to a brief demonstration.
Start over, and read your directions very carefully. In fact, it might be helpful to start with the die and the shellplate having something on the order of a quater inch gap, when all the way up. Then, begin screwing the die in until you make contact. Then back off (a little) on the handle and screw the die in a ¼ turn at a time, until you feel a toggling operation, as you repeat the last portion of the stroke. At some point, you will feel this toggling.....unless you go past it!
If you do that, you should be able to tell that you have because your stroke will be actually shorter, and will CONTINUE to get incrementally shorter with every additional clockwise adjustment. If you go PAST the toggle point, it will NEVER cam over, the more you screw it in. Your stroke will just get shorter and shorter, like going from a 180º arc to 178º, and so on. This will be your only clue.
Consequently, you will not be using the mechanical leverage built into the press, and depending on your chamber dimentions, you might not be strong enough to force the shoulder back where it belongs. In other words, this doesn't have anything to do with Winchesters. It has to do with the difference between full length, and neck sizing.
Geeze, this is really clear as mud, ain't it?
Don't give up, you will catch on. LB
[ 11-23-2004: Message edited by: LB ]