primer has a outie

[Link]

I have been using fed match primers in my 30 br in Lapaua brass. The last time I reloaded I used cci 400s, I noticed quite a few are sticking out some about .010. The brass has maybe 6 or 8 firings on it. I checked to see if they are seated and they seem to be bottomed out. I will measure the height of the primers but doubt if that is it. What else could it be? I have never seen this before.

What do you use for a primer in the 30 br?

thanks

 

[barefooter56]

Link,
Get a Primer pocket uniformer like the carbide Sinclair International unit and the powder screwdriver attachment or the LYMAN PREP CENTER adaptor. These only cut on the BOTTOM of the primer pocket not the sides so the primer pockets are all at a uniform depth and all the primers will be below flush with the case head. They are preset to close to the SAMMI maximum primer pocket depth. The carbide makes them just about indestructible. They will not self clear the brass chips so you will have to remove the cutter from the primer pocket, clear the chips and start again until you have no vertical lines in the bottom of the primer pocket and no brass chips. This operation also helps with giving you a more constant firing pin stroke which helps with accuracy.

 

[Jose_Luis_G]

Check the dimension of the case. You may notice that the shoulder is below from expected.
When firing the primer goes a bit backwards due to the pressure in the case.
In other words, you have a little headspace, more tan expected.

 

[fguffey]

The brass has maybe 6 or 8 firings on it.

As has been suggested you should uniform the depth of the primer pockets. That does not explain why one primers fits and another primer does not.

6 to 8 firings: If there has been a change in the depth of the primer pocket there have been other changes.

F. Guffey

 

[ab_bentley]

You're also on the verge of blanking. I have a 32lb spring with .062" firing pin and no headspace issues. Right before I blank a primer, that nipple appears.

 

[Link]

As has been suggested you should uniform the depth of the primer pockets. That does not explain why one primers fits and another primer does not.

6 to 8 firings: If there has been a change in the depth of the primer pocket there have been other changes.

F. Guffey

 

[Link]

I just measured primer pocket depth. They range from .102 to .118. A cci 400 measures .120 h. How much should a primer crush?
thanks Link

 

[Scott Harris]

check your decapping pin and make sure you are not damaging your brass/primer pocket by setting the pin too low. That would be my first guess as to the source of your problem. You can roughly check your pocket depth with a set of calipers....should be in the .117-.123 (SR) or .125 -.132(LR) range per SAAMI.

 

[Scott Harris]

SAAMI does NOT have ANY standards for primer pockets.

page 36....primer pocket specifications....
http://www.saami.org/specifications_and_information/publications/download/206.pdf

 

[XBBR Shooter]

page 36....primer pocket specifications....
http://www.saami.org/specifications_and_information/publications/download/206.pdf

Sorry... I never saw that.

 

[dkhunt14]

The cups on the CCI are probably a little thicker and harder. That would make an excessively head spaced case push further ahead from firing. That would allow the primer to back out a little farther. Is the primers sticking out or do they have cratering? Matt

 

[JRS]

page 36....primer pocket specifications....
http://www.saami.org/specifications_and_information/publications/download/206.pdf

+1

 

[fguffey]

I just measured primer pocket depth. They range from .102 to .118. A cci 400 measures .120 h. How much should a primer crush?
thanks Link

Link, there are core hole plugs, freeze plugs, welch plugs etc. and then there are primers. I do not suggest you crush/upset the primer, the primer is a crush/interference fit. I suggest you bottom out the primer and then stop. There is something wrong with your numbers. as said before; use a primer pocket unifoming tool to set the depth of the primer pocket. That does not explain how the depth of the primer pocket changed.

Had you saved a few of the cases for comparison you could determine how much case head expansion the cases have experienced during the 8 firings.

F. Guffey

 

['Freak]

The transition from primer pocket floor to the pocket’s sidewall may have a bit of a radius to it that is preventing the primer from seating fully so leaving some of the primer poked out above case head level; not good.

I use Sinclair’s primer pocket uniforming tool to make all primer pockets the same depth with a square corner where floor meets wall. After shooting, I clean all primer pockets using the same tool.

The text and illustrations in a “Forster Products Catalog #82” are saying “ideal” is seated far enough to put the anvil feet on the floor and to slightly preload the anvil legs, increasing its sensitivity, but leaving the primer cup still just a bit short of touching bottom of a truly flat pocket floor. They’re saying putting the cup to the floor is too far and very possibly damaging the primer. Glen Zediker says much the same in “Handloading for Competition”.

 

[SmokinJoe]

CCI 400 is pretty thin & soft. I wouldn't use anything thinner than Fed 205. CCI BR4, Wolf SRM, Rem 7 1/2 are some others that have stronger cups.

 

[M-61]

I have been using fed match primers in my 30 br in Lapaua brass. The last time I reloaded I used cci 400s, I noticed quite a few are sticking out some about .010. The brass has maybe 6 or 8 firings on it. I checked to see if they are seated and they seem to be bottomed out. I will measure the height of the primers but doubt if that is it. What else could it be? I have never seen this before.

What do you use for a primer in the 30 br?

thanks

Last question first: I use CCI primers in my 30BR
I may have misunderstood you main question so: Are these primers "sticking out" before or after being fired? Some of the responses made me ask.
Difficulty seating flush when reloading?

 

[knguyen]

I have been using fed match primers in my 30 br in Lapaua brass. The last time I reloaded I used cci 400s, I noticed quite a few are sticking out some about .010. The brass has maybe 6 or 8 firings on it. I checked to see if they are seated and they seem to be bottomed out. I will measure the height of the primers but doubt if that is it. What else could it be? I have never seen this before.

What do you use for a primer in the 30 br?

thanks

Link:
I have had really good luck using the CCI450 small magnum primers, especially using 4198 powder.
good luck
khanh

 

[BenPerfected]

The transition from primer pocket floor to the pocket’s sidewall may have a bit of a radius to it that is preventing the primer from seating fully so leaving some of the primer poked out above case head level; not good.

I use Sinclair’s primer pocket uniforming tool to make all primer pockets the same depth with a square corner where floor meets wall. After shooting, I clean all primer pockets using the same tool.

The text and illustrations in a “Forster Products Catalog #82” are saying “ideal” is seated far enough to put the anvil feet on the floor and to slightly preload the anvil legs, increasing its sensitivity, but leaving the primer cup still just a bit short of touching bottom of a truly flat pocket floor. They’re saying putting the cup to the floor is too far and very possibly damaging the primer. Glen Zediker says much the same in “Handloading for Competition”.

It goes real smooth if you use this tool. Especially easy to hold the case and use the bit in a drill press.

http://www.sinclairintl.com/reloadi...clair-primer-pocket-uniformers-prod34720.aspx

 

[Link]

Hi Khanh.

This is when reloading they don't go flush. My headspace is .001 to .002. I guess I could have bumped the bottom with the deprimer stem at one time. Just another mystery in my life. Or SNAFU lol Maybe it's time for new brass

Later Link

 

[M-61]

Hi Khanh.

This is when reloading they don't go flush. My headspace is .001 to .002. I guess I could have bumped the bottom with the deprimer stem at one time. Just another mystery in my life. Or SNAFU lol Maybe it's time for new brass

Later Link

Your headspace is NOT related to your problem. (this is happening during reloading and NOT after you have fired and looked at it) Hitting the case bottom is certainly a possibility but it would have to be a solid hard hit. 30 BR's I have found (2 rifles chambered in that) to be easy on the brass. I would make sure the primer pocket has clean corners and the seating stem on what ever tool you use to seat the primers is the correct one (SR) and working correctly. Take an empty case and see if indeed the 'plunger' enters the primer pocket correctly. I'm sort of 'winging' it on the above.