Side of primer sheared when seating

  • Last Post 05 December 2020
zhughes posted this 04 December 2020

Hi all, Against my better judgment I bought a Lee product and landed on the bench prime tool. When priming some 223, it seated the primer where it's supposed to be, but in the process it actually sheared the side wall of the primer out of the pocket. I took an exacto knife and trimmed it off. The case is seated at the correct depth and by looking at it you would never know what happened. Do any of you have experience with this scenario, and if so, did you have any problems with firing the cartridge? ie duds, blow outs, etc

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John Alexander posted this 04 December 2020

I have been using Lee priming tools for as long as they have been on the market for all my priming and have never see such a thing.

Was that one primer?  All primers?  Some of the primers?

If it wasn't a one shot event, I suggest you call Lee.  I have always had excellent service from them.


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Duane Mellenbruch posted this 04 December 2020

Are these military style with crimped in primers?  Crimped primers must be either reamed or swadged to remove the crimp.  If you have compromised the primer skirt, I would avoid shooting these cartridges.

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Qc Pistolero posted this 04 December 2020

Like Duane said;could be done by a case which had a crimp around the primer pocket.

Another problem I once ran into;foreign made primers.Us work in Imperial measurements while europeans work in metrics.I once had many problems seating S&B primers in my Dillon.One of my friend had the same problem(same press,same primers).In both cases,we measured the diameter and height of the primers and there was a slight difference compared with US made primers.

Might be the press.I have 5 and one of them had some problems.And no,it wasn't the Lee.But this goes to show that it could be the press.Afterall,I always thought that perfection existed but nopody is berfect!

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Duane Mellenbruch posted this 05 December 2020

Ha ha, I saw what you did there.........   :-)

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zhughes posted this 05 December 2020

Did you load and use those rounds or scrap the primers?

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