Primers wont fit / 6BR Lapua Brass / ( Problem Solved)

[markT]

Operater Error: See #16
Started reload for 2023 Prairie Dog hunt.
CCI BR-4 Primers are not going in de-primed primer pockets Lapua Brass on muti fired cases.
I've never had an issue with primers going in pocket.
What do I need to do and what do I need to purchase?
Thank you.

 

[6BRA]

cleaned brass? What are you seating primers with?

 

[markT]

Yes cleaned sized and polished / Seating with RCBS Hand Priming Tool .

 

[Chaotik]

Are you doing anything else to the primer pockets other than depriming?

 

[M-61]

Cleaned with pins?
Meaning the brass tumbled in stainless pins

 

[markT]

Are you doing anything else to the primer pockets other than depriming?

^^^No
Brass is polished in corn cob media. I've reloaded a lot of rounds in various chamberings and never done anything to primer pockets other make sure they don't have corn cob media stuck in them and no issues.
I also tried CCI 400's in these cases and same issue will not go in pocket.. A few cases did allow the primer to be installed ( inserted) / seated? ( what ever correct term is)

 

[Liven The Dream]

K&M Picket Tool ??

 

[Big Mc]

Started reload for 2023 Prairie Dog hunt.
CCI BR-4 Primers are not going in de-primed primer pockets Lapua Brass on muti fired cases.
I've never had an issue with primers going in pocket.
What do I need to do and what do I need to purchase?
Thank you.

Mark send them to me. I shall check them out for you. Tommy Mc i,ll send back the ones that went BANG . LOL

 

[markT]

Should I get the reamer or cleaner or both?

 

[JFrank]

Should I get the reamer or cleaner or both?
View attachment 1401702

Uniformer’s I’ve used don’t touch the side of the pockets, you may want to look into a primer tool with increased leverage such as K&M, PMA or 21st century.

 

[piie]

Before you go all postal on those poor primer holes...

You say multi-fired? So I assume you have re-loaded ( ie, re-primed) these brass multiple times with exactly the same components/tools as before?

Eliminate things systematically - you can't shrink primer pockets once you make them bigger - make sure that is the problem...
Is this a new batch of primers? DO you still have some of the older batch left that you can measure?

I have one of those older RCBS - they have two sets of inserts/stems - one for small and one for large primers - did you perhaps mix them up? How easy can you "cycle" the primer when empty?

Do you have a press primer ( most presses have the little primer attachment to just flip over) - if so, try it with that and see if it works to eliminate a faulty primer tool...

 

[X-Caveman]

I'm sure you have, but just in case... Make sure your tool is set up for small primers (not LRP).

 

[jds holler]

Measure your primers, preferably micrometer, and compare with last batch that did work. (Just in case there is a manufacture error)

Matter of fact, just measure the hell out of everything. jd

 

[BoydAllen]

Some years back I replaced the decapping rod of a die and set the new one incorrectly. Luckily I was loading a small number of cases at the range to test a load. Long story shorter, the decapping rod was bumping the inside of the case, bowing the bottom of the primer pocket outward so that primers could not be seated flush. I only ruined a few cases. Raising the decapping rod solved the problem.

 

[SSL]

Just a wild shot here, but have you tried a different priming tool? Are the primers refusing to even start or are they just not seating completely? Some of the various hand tools for priming can eventually develop a flat spot on the cam section that doesn't make the primer punch travel full depth.

 

[markT]

EDIT: I'm a complete dumb ass..
I had the large rifle primer "push rod" in the tool. What threw me off was the shell holder and I was able to load / prime 8-10 rounds before the issue suddenly started.. Problem solved..
Thank you all so much for the input.. Esp: "piie!"

 

[M-61]

Crazy but:
Does a fired primer re-seat in the pocket
Obviously it should but then the new should have so..

 

[SteveOak]

I am trying to remember when I have had problems starting a primer.

Case not correctly aligned in the shell holder is one.

Internals of the RCBS primer tool jammed.

Wrong push rod.

When all else fails, remember anything can be made to fit anywhere if you are able to apply sufficient force.

 

[markT]

Issue solved: See post number 16..
Here's my sign..

 

[dthomas]

We all do things that make us feel stupid, atleast you found the problem before ruining a bunch of brass.