Doco Overboard
Ultimate Member
Was the case resized in a different batch or did you install/remove your dies and work on other cases? if you didn't have to do that, slow down and make sure the press ram is raised lowered consistently for each and every case.
I know its hard to do when your looking at a pile of brass trying to make it smaller. Could be just that its not resized all the way.
I forgot to add different head stamps may have slightly different rim thickness plus some tolerance differences in machining between brand names of the case gauges. The fit of the case in your gun is the best gauge. See if a 5% one will chamber with no resistance on a stripped bolt.
I know its hard to do when your looking at a pile of brass trying to make it smaller. Could be just that its not resized all the way.
I forgot to add different head stamps may have slightly different rim thickness plus some tolerance differences in machining between brand names of the case gauges. The fit of the case in your gun is the best gauge. See if a 5% one will chamber with no resistance on a stripped bolt.