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Flippin Primers

Have a 550b, Every 100 rounds its flipping three primers. What adjustment do i need to make, it make the shell plate return all the way up to clear the new primer? it JUST clears the new primer now. I think the new primer is dragging on the bottom of the shell plate once and a while and flipping it.

Sorry, I have toooo many reloading presses!! This is on my 650.

First, check the primer seating assembly and be sure that it is threaded fully up into the underside of the platform. The shellplate isn't rotating over a primer, the primer disc rotates underneath the shellplate. A primer with a high anvil could rub on the underside of the shellplate, but there isn't room for it to flip.

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