Decapping Speer Gold Dot 9mm +P

[ocabj]

First time I ran Speer Gold Dot 9mm +P brass through the press today after I shot about 40 rounds of it at the range. When I put one through the decapper/resizer, I noticed the primer didn't pop out. So I tried to take it out of the shell holder but it was stuck. I took he shell holder out along with the shell and noticed the primer was out, but not out fully. So I put everything back in an pulled the press handle again and the primer popped out. About 75% of the Gold Dot brass I had to run through twice in the decapper. One pull to push the primer out, and a second pull to pop the primer out.

Anyone else had this happen before? Is there something special with the brass used for these rounds? It's nickel plated, so I don't know if it's got different primer pocket dimensions or what.

 

[org]

Is your decapping pin extended far enough? I had the same thing happen with some .223 military (crimped) brass. The pin was deforming the cup enough that it wasn't quite pushing it out due to the resistance from the crimp.

 

[KP95DAO]

I have run into this with once fired range brass. I believe it is because the decapping pin is a close fit on the top of the anvil. As you push the primer out the anvil grips the decapping pin and then when you lower the ram it reseats the spent primer enough to stay in the pocket. Then when you decap again there is not enough force to cause the anvil to grip the pin and it comes out as it should.

 

[blades67]

Are you using a Dillon sizing die? A friend had that problem with a lee sizing die, but the Dillon decapping pin is springloaded to eliminate that problem.

 

[ocabj]

I was using an RCBS decapping/sizing die. I recently purchased an RCBS universal decapper and that thing pops primers out easily. Too easily actually. I have to put my thumb near the bottom of the ram to deflect the primer as it pops out and hits the bottom and flies out, just so they don't go all over the floor.

 

[GooseGestapo]

Sounds like you have what is called (at least its what I've heard them called) is a "Ringer-Popper". It is where the sides of the primer is left in the case, but the head of the primer is "Popped" off, leaving a ring of metal in the primer pocket. Is this what you are refering too? I've had a lot of these through the years and seem to come from range brass that has sat out for a while and had corrosion fuse the primer into the pocket on un-sealed ammo. Sometimes, the metal dosen't complete separate from the sides and is a flange of metal protruding from case. These are easily identified, and disposed.

I throw away all these, and try to pre-sort them out as they normally result in a press-jam and a crushed primer. I've even had primer detonations resulting from these. Becareful and wary of these.

 

[ocabj]

Nope. The primer pops out completely intact.

 

[JPM70535]

I had the same problem with my Dillon 650 trying to deprime 40 S&W some time back. What I finally decided caused the primer failure to pop loose was a dirty decapping pin. I tried everything possible short of changing the pin and the primers still stuck. When I changed the decapping pin, the problem dissapeared. I took some steel wool to the ond pin and when I reassembled it into the die, it worked fine. Other than that I haven't got a clue.



I JUST LOVE THE SMELL OF BLUEDOT IN THE MORNING!!!

 

[Jim Watson]

KP has it, known as pullback.
You can fiddle with decapping pin protrusion and the shape and finish of the end until it quits.