AJ
US Veteran
Hi All
I have a Dillon Square Deal B set up for .38 Special presently. Yesterday, whilst reloading, the Primer Assembly Slide started to malfunction and would not return to the position where the shell comes down and the primer is inserted. This occurred every on estimate of 2 to 3 times per 10 reloads. There did not seem to be a pattern to this malfunction. Primers were spitting everywhere around my garage. Also, occasionally, a primer would flip upside-down and be inserted into the shell the wrong-way round. Occasionally, there would be the sound of a spring popping and the shell plate would shake causing powder to spill out.
I found this video on Youtube which displays the same issue I'm having but unfortunately, no solution is contained in the video.
https://www.youtube.com/watch?v=Q-iBtHEXGFU
I do not believe this is a timing issue as everything else lines up fine. I replaced the return spring but there was no improvement. I took everything apart and cleaned it. No improvement. I also applied some grease to help the assembly slide back into position however this did not work either. I had recently replaced the plastic "primer slide bearing", which is in great condition still, so this is not the problem.
I would appreciate any suggestions as to what could be the problem and how to fix it.
Thanks
Moo Moo
I had the same issues with my SDB a few months ago.
The problem was a combination of a small buildup of crud where the primer arm moves back and forth (I thought I had cleaned it but there was still more there) and spilled powder iunder the she'll-late.
A good clean saw it come right.
The problem is that you guys use them upside down compared to the folks here!!


