Primer holder

[Oregonhunter5]

Question. It seems the primer holders that came with the rock chucker don't except the large magnum rifle primer. True?

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[Rick4070]

Doesn't the press come with small and large primer plugs and sleeves?

 

[Oregonhunter5]

It did. And I just made it work.
But the primers seemed a bit large for the holder.

 

[Rick4070]

Odd, that.
There shouldn't be much, if any difference between the diameter of a large rifle primer and a large rifle magnum primer.
Here is a link to what primers SHOULD measure:
Ballistic Tools - Articles - Minimum and maximum primer and primer pocket dimensions
What do your magnum primers mic out at?

 

[cookie]

Large pistol and rifle as well as the respective magnum primers should all be the "same" diameter.

 

[Rick4070]

Should be the "same," but the tolerances do vary a bit. LP primers average between .2100" to .2120", and LR primers between .2105" to .2130", for a variance of .003".
That might not sound like a lot, but if you were at the max size tolerance, and the primer sleeve was on the minimum side of whatever tolerance they are manufactured to, I could see a tight fit.
And, it would still be interesting to see what Oregonhunter5's primers measured out at....

 

[Oregonhunter5]

They are measuring .2105
They just sit above the rim of the primer holder, so hat made my a litttle nervous.

 

[P7M13]

I don't even attempt to use the primer assembly in my rockchucker.

 

[Rick4070]

I don't even attempt to use the primer assembly in my rockchucker.

Because why?

 

[P7M13]

I prime by hand with an RCBS classic hand held. To properly seat a primer, there is no need for the leverage a R/C provides.

 

[Rick4070]

I also use a handheld priming tool, now...
But, when I started handloading, I used the priming arms that came with my single stage press, with no problems, for hundreds upon hundreds of properly seated primers.
No need for the leverage, true, but a guy should be able to use the options that come with his press without problems...