9mm primers get pulled back by decap pin

[IMtheNRA]

I have a terribly annoying problem - about 5% of the primers get pulled partly back into the pocket during resizing/decapping, which locks up the press.

I use a Hornady LNL with Hornady dies, Winchester 9mm brass, Federal SP-Match primers. The problem started after I switched to these primers as they were the only ones I could buy during the Great Primer Scare.

I know that I can buy a spring-loaded Dillon die that pings the primers out, but I hope there is a solution using my current Hornady die.

Any ideas?

 

[Claude Clay]

you need to use up the 1000 primes so, at some point in the cycle when the base is moving back down perhaps move the case a taste whit your free hand thus ruining the alignment. it will slow your production down, but it is perhaps better than getting jammed up randomly.

place a bullet at the seating station and, unless you have very large hands, move the de-primed case a taste against the spring with your index finger. little to no lost time.

and its only for the balance of the 1000; hoping you did not buy more than 1 box...

 

[Steve C]

The first thing I would try is to adjust the depriming pin out (deaper) a bit if there is room, to make sure it pushes the primer free of the pocket completely. This has always fixed any problems with incomplete primer removal I have had in the past.

 

[moxie]

Or, it may be too far out. Try shortening it up a bit. One or the other will do it.

 

[rcmodel]

Almost all my old handgun die sets deprime and bell in the second die.

Compressed air from the expander plug blows them out & off with enough force to ricochet around the primer catcher a few times before they settle down.

I guess sometimes older is better.

rc

 

[angus6]

Here's how I sloved that with my Dillon dies and Blazer brass, remove decap pin and cut off the stem from the base, get a pack of Lyman pins put the cut off base and the
Lyman pin back in die, worked 100% with the Dillon and Blazer brass. Lyman pins are a smaller dia.

Looking at a picture of Hornady dies that should be doable, can drop a couple Lyman pins in the mail if you want to try it, another thing that might help is rounding the tip more

 

[Walkalong]

Check the pin for a sharp edge. It is sticking between the anvils legs. It needs to be slightly rounded, but not tapered.

 

[chris in va]

Yup, sounds like the pin is too sharp.

 

[BYJO4]

I also suggest you look at the tip of the decapping pin and make sure it is rounded and not sharp or pointed.

 

[kingmt]

I would say you have primer+ pockets that need swaged.

 

[moxie]

Sounds like leventy leven different discrete solutions. Aren't you glad you asked?

My .45acp set is as rc describes. Love it. Can't understand the change.

 

[rg1]

Yep, round the tip of the pin. Will almost totally solve your issues.

 

[MikeOBWan]

I just ran into this problem with my RCBS 9mm decapping/resizing die in my 550b. The solutions was easy. Just take a piece of sand paper or dremel with a polishing bit and polish down the last couple millimeters of the pin. Also polish the end of the decapping Pin and add a little bit more taper to the point of the pin (the transition area from the rod to the point). DO NOT Sharpen it. After I polished the end of the pin I did not experience anymore stuck primers.

Thanks
Mike

 

[ArchAngelCD]

My first thought was a too sharp pin too.

 

[groundsclown]

I too just experienced this with a brand new set of rcbs dies. Seems it happens 1 out of 20 or so rounds.
Moving the pin in/out didn't help but I'll try polishing it up today instead.