Deprime issue
Quote from Reloader on May 11, 2018, 1:24 amEvery 10 to 30th round I have a spent primer get reseated in the case it was removed from. This problem has went from almost never to pretty often. The die is set to almost touch the shell plate although I have tried it higher with no luck. Just installed a complete new size/deprime die from Dillon, same problem. This 1050 has about 20,000 rounds through it since new and this is basically the only problem I have had. I run 9mm only so never do any changeovers.
Any Ideas?
Every 10 to 30th round I have a spent primer get reseated in the case it was removed from. This problem has went from almost never to pretty often. The die is set to almost touch the shell plate although I have tried it higher with no luck. Just installed a complete new size/deprime die from Dillon, same problem. This 1050 has about 20,000 rounds through it since new and this is basically the only problem I have had. I run 9mm only so never do any changeovers.
Any Ideas?
Quote from Reloader on May 11, 2018, 5:08 pmThe spent primers are getting jammed onto the end of the depriming pin. There are two different approaches to dealing with this. You can either round off any sharp,square edges on the tip of the decap pin, or you can remove a small amount of material from the tip of the pin so the tip is the same diameter as the shaft of the pin. Either one makes it less likely that the spent primer will stick to the end of the pin.
The spent primers are getting jammed onto the end of the depriming pin. There are two different approaches to dealing with this. You can either round off any sharp,square edges on the tip of the decap pin, or you can remove a small amount of material from the tip of the pin so the tip is the same diameter as the shaft of the pin. Either one makes it less likely that the spent primer will stick to the end of the pin.
Quote from Jay on September 3, 2023, 3:36 pmI just moved from a 550b I used over 25 years without complaint.
The 750 has lots of nice features but it won't de-prime 9mm Luger reliably. Fairly frequently it will fail to de-prime. The problem is not specific to a single brand of case. This is not just annoying, it can cause other problems as well... Having to stop to remove the round with the spent primer in place can really cause issues.
Anyway, I thought I might have a problem with the dies (Dillon carbide) so I tried my old RCBS carbide dies but the results are the same. I also tried Lyman Carbide and Redding Carbide all of which experienced the same problem. I thought I had found a solution by changing the depriming pin but it turned out I was over optimistic... it did improve the situation but did not solve it as it at first appeared.
As an interim fix I thought I would de-prime the 9mm brass before trying to load it in the 750. This of course will work, but it also is very time consuming. After de-priming about 100 cases on my old RCBS single stage Rockchucker press I noticed I did not have this problem with the single stage press!! Thinking this is/was curious I tried Lyman carbide die (I was using RCBS Carbide die) and got the same results... same dies I had tried on the 750 (I tried all of them) that didn't de-prime correctly and they all worked with out an issue on the old Rockchucker press.
As you might expect I have found this quite perplexing but it does lead me to the conclusion the problem ( whatever it might be) lies in the 750 not elsewhere.
Does anyone have any experience with this? Any thoughts/ideas?
I very much appreciate any help y'all can offer.
Chuck
I just moved from a 550b I used over 25 years without complaint.
The 750 has lots of nice features but it won't de-prime 9mm Luger reliably. Fairly frequently it will fail to de-prime. The problem is not specific to a single brand of case. This is not just annoying, it can cause other problems as well... Having to stop to remove the round with the spent primer in place can really cause issues.
Anyway, I thought I might have a problem with the dies (Dillon carbide) so I tried my old RCBS carbide dies but the results are the same. I also tried Lyman Carbide and Redding Carbide all of which experienced the same problem. I thought I had found a solution by changing the depriming pin but it turned out I was over optimistic... it did improve the situation but did not solve it as it at first appeared.
As an interim fix I thought I would de-prime the 9mm brass before trying to load it in the 750. This of course will work, but it also is very time consuming. After de-priming about 100 cases on my old RCBS single stage Rockchucker press I noticed I did not have this problem with the single stage press!! Thinking this is/was curious I tried Lyman carbide die (I was using RCBS Carbide die) and got the same results... same dies I had tried on the 750 (I tried all of them) that didn't de-prime correctly and they all worked with out an issue on the old Rockchucker press.
As you might expect I have found this quite perplexing but it does lead me to the conclusion the problem ( whatever it might be) lies in the 750 not elsewhere.
Does anyone have any experience with this? Any thoughts/ideas?
I very much appreciate any help y'all can offer.
Chuck
Quote from Xiphos on September 3, 2023, 8:25 pmForgive me for sounding like a putz but it sounds like the de-priming pin needs to be run further into the case to ensure complete removal of the primer.
I know this sounds so obvious as to be foolish because I assume you've already tried this remedy.
Please, keep us advised as to your solution(s) when you arrive at one/them.
Forgive me for sounding like a putz but it sounds like the de-priming pin needs to be run further into the case to ensure complete removal of the primer.
I know this sounds so obvious as to be foolish because I assume you've already tried this remedy.
Please, keep us advised as to your solution(s) when you arrive at one/them.
Quote from Jay on September 3, 2023, 9:14 pmQuote from on September 3, 2023, 8:25 pmForgive me for sounding like a putz but it sounds like the de-priming pin needs to be run further into the case to ensure complete removal of the primer.
I know this sounds so obvious as to be foolish because I assume you've already tried this remedy.
Please, keep us advised as to your solution(s) when you arrive at one/them.
I have tried a LOT of things... at the moment the facts and circumstances point to a problem with the 750 not other issues, though this is by no means certain.
My latest thought is I have run the de-prime pin down too far and thus am jamming the pin too far down. So next thought is to back the pin out until it no longer hits the primer and then ease it down until it just de-primes the case... maybe it will work...
This is an extremely frustrating issue... it has essentially rendered a significant investment in a new press nearly useless.
I will definitely keep y'all posted.
Chuck.
Quote from on September 3, 2023, 8:25 pmForgive me for sounding like a putz but it sounds like the de-priming pin needs to be run further into the case to ensure complete removal of the primer.
I know this sounds so obvious as to be foolish because I assume you've already tried this remedy.
Please, keep us advised as to your solution(s) when you arrive at one/them.
I have tried a LOT of things... at the moment the facts and circumstances point to a problem with the 750 not other issues, though this is by no means certain.
My latest thought is I have run the de-prime pin down too far and thus am jamming the pin too far down. So next thought is to back the pin out until it no longer hits the primer and then ease it down until it just de-primes the case... maybe it will work...
This is an extremely frustrating issue... it has essentially rendered a significant investment in a new press nearly useless.
I will definitely keep y'all posted.
Chuck.
Quote from ARMTGuy on September 18, 2023, 9:19 pmThe most likely cause is the spent primer is getting wedged onto the tip of the decap pin as it is pushed out, and on the upstroke the decap pin partially pulls the primer back up into the primer cup before the two separate. Options for dealing with this are to flatten the tip of the decap pin so it doesn't go as deep into the primer anvil, or to taper the tip of the pin so it is narrow enough that the primer anvil won't bind onto it . Neither method is perfect, both will reduce the sticking primer incidence.
The most likely cause is the spent primer is getting wedged onto the tip of the decap pin as it is pushed out, and on the upstroke the decap pin partially pulls the primer back up into the primer cup before the two separate. Options for dealing with this are to flatten the tip of the decap pin so it doesn't go as deep into the primer anvil, or to taper the tip of the pin so it is narrow enough that the primer anvil won't bind onto it . Neither method is perfect, both will reduce the sticking primer incidence.