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Mill notch in wilson seater die?

No, but as you pick up the die and roll it to the side you grab the seating knob with thumb and forefinger while holding the body of the die with your other three fingers and when you give the knob a flick up and then back down the air will push the cartridge down a touch out of the die and then with your other hands thumb and forefinger you grab the base of the case and pull it out. Clear as mud eh??? Once you get the hang of it it’s pretty darn easy to do and after hundreds or thousands you don’t even think about it.
 
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Newer Wilson seaters have a bleed hole in the seating stem which precludes the technique noted above. The bleed hole is supposed to allow easier removal of the completed cartridge. It fixed one problem and exacerbated another.

I found that sticky cartridges in the seating die were from neck sizing. Wilson bushings and probably others size a portion of the neck leaving the lower neck, shoulder and body unsized. When I went to full-length sizing and mandrel neck expanding the problem with stickiness in the seating die went away.
 
I have one in a Whidden seater, like it, just to many dies LOL
EDIT: It's for sale on here is the reason for the comment of "just to many"
 
I find they stick when it gits sticky from missed lube. I Clean regularly with a cotton swabs.

My ppc sticks on some, about 10, out of 200 that are miss made at the 200 line.
I've kinda buggered up a spot or two on the bottom using A screwdriver to pry . I can feel These marks so i know the seater isn't sitting down perfectly. So i do not like doing it.
However i haven't come up with a solution.
 
I've kinda buggered up a spot or two on the bottom using A screwdriver to pry . I can feel These marks so i know the seater isn't sitting down perfectly. So i do not like doing it.
However i haven't come up with a solution.
Get a piece of 5/16" wooden dowel. With a fine toothed hacksaw blade, slot the end of it down about 1/2". Fold a piece of 320 grit into the slot, get a little oil on it, chuck it into a power screw driver and run it in and out a ways. After 20 or so strokes, clean the beejeezus out of it and try a case. Rinse and repeat until it's smooth with ten o's (smooooooooooth).
 
I did a bit of work to my die today. The round was sticking in the neck. I polished it with valve lapping compound, jb and then flitz. It's still a bit tight but I have smaller neck bushings coming so I didn't want to go too far with it. It is nice and smooth though. I also milled some slots in it. It worked out great. I contoured and polished the stem too.
 

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