Originally Posted by m657

have done this for years with little difficult;

this last batch however, presents 'PIA' level issue:

a certain percentage of otherwise 'within spec' brass of all head stamps, are now showing the problem of 'primer sucking' phemonena:

On 650 Dillon, Stage 1 decaps/resizes; Stage 2 is new primer insert/powder drop.

Therein discovered this problem:
on some primers they cling to the decap pin & are sucked back into the primer pocket, so you can recharge otherwise normal case.

After talking with Dillon tech & getting their suggestions, there remains perhaps a 5-10% rate of such continuing to occur.

They did mention 'CCI' & another shiny primer as being more likely than WSP etc due to softness.

Further exam of the cases, not yet confirmed, is at least 'many' of the affected cases, have the mark of an old military primer seal, with the little extra ring around the primer hole.

Discussion/observations/resolution/helpful stories solicited.