Hey, thank you hounddawg! I didn't know that trick!
So I did a few measurements (the measurements are in no particular order):
Case length => Primed case length:
51,67 => 51,83 => +0,16mm (0,006 in)
51,71 => 52,03 => +0,32mm (0,013 in)
51,67 => 51,76 => +0,09mm (0,004 in)
51,66 => 51,88 => +0,22mm (0,009 in)
avg 0,20mm (0,008 in)
Primer pocket depth:
3,35mm (0,132 in)
3,34mm (0,131 in)
3,33mm (0,131 in)
3,33mm (0,131 in)
avg 3,34 (0,131 in)
Primer thickness:
3,28mm (0,129 in)
3,26mm (0,128 in)
3,24mm (0,128 in)
3,24mm (0,128 in)
avg 3,26mm (0,128 in)
Conclusion: the primer pocket is deep enough, it is probably my priming tool which doesn't push the primer deep enough!
EDIT:
Quote:
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Can you put a small round piece of masking tape on the priner seater and seat a primer in an empty case? The tape will have some compression, but it should be a good troubleshooting aid to verify if the seater is too short. If not thix, my bet is dirty or shallow pocket.
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I will try it!