lim10 Posted February 6, 2008 Share Posted February 6, 2008 I have a couple of questions about seating primers. I recently had a fantastic trigger job done on my 625. With the lighter trigger pull, I knew I needed to seat my primers deeper (I had heard 0.008” below flush). As I tried to figure out the best way to do this on my Dillon 650, I decided to put a shim under the punch support bracket (black L-shaped piece of metal which the primer seater assembly pushes on to seat the primer). The shim was actually a 0.011” thick coupon cut from a .40 casing. The shim causes the primer seater assembly to push higher and makes it easy to seat primers at approximately 0.010” below flush. I put some primers into brass (without powder and bullets), loaded them into moonclips, and fired the primers. When I fired, the primers popped out of the primer pocket and jammed the gun. My real questions are: • When powder and bullets are added to the mix, will this keep the primers in the primer pockets? • Can you seat primers too deep (maybe affecting the anvil and causing the primers to pop out of the primer pocket)? The primers did not appear to be crushed; they were just seated deeper than normal. Pic - Primer seater assembly Pic - 23 is the punch support bracket Link to comment Share on other sites More sharing options...
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