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Problem seating primers

Loading .38 Specials, I deprime in Station #1, advancing the case to Station #2. I can see the primer in the cup. When I press forward on the handle the primer does not seat, but the powder drops. I cannot feel any pressure. OCCASIONALLY, the primer will seat.

As a test to make sure I can seat the primer at Station #2, when I pull out the pin at Station #2 and put a case in (without starting at Station #1), I can easily seat the primer. Nothing seems to be binding or out of line. When I try again moving the case from Station #1 after depriming and moving the case to Station #2, it does not seem to "recognize" that there is a primer in the cup when I press forward on the arm. I can't feel any pressure. On occasion, I can feel a slight click and it will seat the primer. 

Be sure the locator buttons and shellplate are all marked "2".

They are. I was loading .38s fine last year and put the cover on the SDB for a few months. Now that I have started reloading again, the problem has cropped up. Does the fact that the primer seats when the case is put only in Station #2, but does not seat when the case advances from Station #1 to Station #2 indicate the problem? 

If you cycle the handle without a case in the shellplate, then push the handle forward, do you hear the clicking sound?

After some adjustment screw turning, the primers are mostly seating with the occasion primer not dropping.

BUT, now, I have another puzzling problem. Using 125 grain lead bullets, the bullets suddenly started seating too deep within the case WITHOUT any adjustment of the .38 steam screw at Station #3. They had been seating properly, then started seating deeper within the case. The belling is not too big; the bullet just does seat on the edges of the case.

I tried to fix the problem by adjusting the .38 seating stem, but I've not been able to fix the problem by screwing it in or out. The bullet sometimes pushes down into the case entirely. Can you give me the measurement as to how far up the top of the Station #3 stem adjustment should be to be at factory setting?

any chance you have a bullet stuck up in station 3?  Or an accumulation of bullet lube from all the bullets that have already been seated?

 

walt

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