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Discussion Starter · #1 ·
Got some new .308 brass, made by Prvi of Serbia. It's all the store
had. I got some Remington since.

Primers won't seat. Pockets just too tight. Primers seated into the
Remington brass with no problems.

Is there any way to enlarge the pockets to correct diameter?

Joe
 

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I take it the Prvi is new unprimed brass right not spent brass?

For some reason do you think the Prvi brand might use a small rifle primer instead?

Other than that, I would like to see a photo of the Prvi PP next to a Rem PP of the same cal. Mike them to see what the difference actually is.
 

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Just how tight are they? They could be small primers. If they are large primers, you might be able to use a primer pocket swaging tool that was designed for crimped military cases. That should open it up slightly. I have several thousand Winchester 40 cal NT cases that are tight with the primers. I used the primer pocket swager on these and the primers now go.
 

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Discussion Starter · #4 ·
Brass is new, unfired.

I seated the first primer normally. The second was hard to get in.
The third was near impossible. I quit trying and switched to the
Remington brass. One case was a little tight, and all the rest were
no problem at all.

I just measured a Prvi case and a Remington case. My dial caliper is
not precise enough to show much of a difference. Maybe .001 or .002.

I see on MidwayUSA swagers and uniformers. I guess I could buy one
of them, but I don't think it will save me any money over just throwing
the bad brass away.

I think I'll hit one with a larger diameter drill to chamfer the opening;
maybe the tightness is at the opening.

Joe
 

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I think I'll hit one with a larger diameter drill to chamfer the opening;
maybe the tightness is at the opening.
Yes, worth a try. Just do the mouth of the pocket, not very deep. I use a carbide countersink bit, less than $5 at Harbor Freight. The angle of cut is much more conducive to starting a primer into the pocket. The advantage of a reamer over a swaging tool is that you can visually identify it at a glance. A swaged pocket looks just like an unswaged pocket. You can't tell until you try to seat a primer.

If chamfering the mouth doesn't work, a primer pocket swaging tool typically goes a little deeper than a reamer, about 1/3 the way into the pocket, but none of them go all the way to the bottom. I hope the pocket isn't tight the entire depth.
 

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I reload a bunch of PPU 556 brass. I have never run into that problem. Much of that is crimped so I'm reaming them anyway. If they're new. I would be more comfortable swaging that brass than reaming or putting a drill to it.
 

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I had the same problem with Wolf primers. It wasn't always all the brass it was limited to just a couple of brands. The worst was S&B.
 

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Tight primer pockets

If you plan to reload a lot of rifle brass, consider "biting the bullet" and invest in a Dillon's Super Swager 600 for $97.00. I constantly pick up used rifle brass at my local gun range. There is always plenty of brass with a military crimp. I usually sort the cases by headstamp and military crimp, then deprime and swage the primer pocket. If you shoot a lot of rifle, it may be worthwhile in the long run. I swage both .308 and .223, since you can change from large to small primer pocket swaging.
 

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I had the same problem with Wolf primers. It wasn't always all the brass it was limited to just a couple of brands. The worst was S&B.
I don't like S&B. And I thought Winchester brass was the worst stuff to prime for 7.62X54R, then found out S&B makes the Winchester brass in that caliber.
 

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Discussion Starter · #13 ·
Update

Finally got brass primed. Two things:

The primer pocket shoulder on the Prvi brass was square. The
Remington brass pockets had a radiused shoulder. Used a countersink
in a drill motor to bevel the opening on the Prvi brass. Just a second on
the countersink was enough. This aided in aligning the primer the
pocket. I don't know if the square shoulder is their design, or if a QC
error.

What brand primers? My wolf are tighter then my federals
After the beveling, I tried priming the brass again. I got a Federal in, but
with considerable difficulty. I tried some CCI 200 large rifle primers. They
went in, but with way too much difficulty. Finally, I tried some Winchester
WLR primers, and had no difficulty. They seated just like I'd expect primers
to seat.

I put my dial caliper on each of the three primers. All measured .210.
There are obviously differences in each, but the difference is in tenths
of thousandths. So my observation is same as demo_slug, that there
are differences in brands. Minute, but significant.

Joe
 
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