Bad Brass and primer combo

[Rum and not the liquid]

So I went to load some 300rum today using nosler custom brass and federal match large rifle magnum primer and i couldnt get the first one to seat properly so much so I can't get the case holder off the case. Has anyone else had a problem with this combo?
I've never come across this in the 4 years and 10 calibres I've loaded for

Thanks Lucas

 

[Varmint Hunter]

FWIW - I've decapped live primers on several occasions and never had a problem. You could always put a couple of drops of oil onto the primer first if you are concerned with detonation but I never bothered.

Once you have removed the primer you can then inspect/measure the components to see where the problem originated.

 

[SidecarFlip]

Presuming you are hand priming, have the primer rod in upside down?

 

[lloydsmale]

primer probably tipped and went in crooked

 

[SidecarFlip]

primer probably tipped and went in crooked

Good reason to lightly countersink each primer pocket, something I always do. A 60 degree chatterless countersink works great. So does the pointed end of your case prep tool.

 

[archer441]

I have had primers tip and go in sideways (too big of a hurry).
try using a decapping pin to push the primer back out.
I never oiled them either with no problems.

 

[SidecarFlip]

I know all the books say never to decap a live primer but the design of a primer and the position of the anvil, I think it would be almost impossible to ignite one pushing it out backwards.

and...

In as much as I've ignited quite a few 209's setting up my blackpowder rifles for breechplug to retainer clearance and 209's are substantially larger than rifle primers and they just go poof, I wouldn't get too worried about setting one off. Thats how you check to make sure the retainer to breechplug clearance is just right, by igniting the primer and then checking for blowby.

If you were looking down the cartridge, you might singe your eyelashes a bit but thats about it.

First time I ignited one I was a bit aprehensive (because I didn't know what to expect). But after the first poof, there was no aprehension because they do little.

 

[Gene]

Every reloader should have a universal decapper. They come in handy. Get one and use it to gently push the primer out. No danger in doing this.

 

[Greyfox]

I have never had an issue decapping live primers. I just do it slowly, and wear safety glasses. Make sure the primer was not mistakingly seated upside down. When in doubt be take extra precautions. Had a buddy take an anvil in the center of his eye many years ago and lost it. It only takes one mistake!