I think he is saying that the spent primer was pushed out of the primer pocket by the decapping pin, but then pulled slightly back into the pocket by sticking to the pin as the pin ws withdrawn back through the flash hole. That leaves the primer almost out of the case, as if the decapping pin had not been adjusted quite far enough out. However, adjusting the pin doesn't solve that problem. Lightly sanding the pin to a slight taper, so that the primer anvil will not grab it, does solve the problem.
Right?
SL1
|