7.62 x 51 primer issues

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7.62 x 51 primer issues

Post by Faedy » 16 Jan 2020, 11:43 pm

Hey
I recently bought a heap of Federal Premium 7.62 x 51 (.308) with 175gn Sierra match king proj.
Shot off a heap last weekend and went to reload tonight but primers dont want to go in. well I forced one and crushed it
They definitely aren't running small primers.
No crimp like marks either
ideas?
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Winchester 1892 32-20
Sauer mod 202 .223
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Howa .300 winmag
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Adler All Weather 12 ga
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Re: 7.62 x 51 primer issues

Post by bladeracer » 17 Jan 2020, 12:43 am

Crimped primers, chamfer the pockets.
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Re: 7.62 x 51 primer issues

Post by straightshooter » 17 Jan 2020, 6:11 am

The likelihood is that there is a slight misalignment of the case in the shellholder when you experience this kind of difficulty.
It will help if you have a little bit of "feel" when you start the primer insertion and a turning or jiggling the case helps.
A slight chamfer on the primer pocket opening will also help.
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Re: 7.62 x 51 primer issues

Post by bladeracer » 17 Jan 2020, 7:29 am

If it's Federal .223 or .308 it will be crimped.
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Re: 7.62 x 51 primer issues

Post by SCJ429 » 17 Jan 2020, 8:10 am

bladeracer wrote:Crimped primers, chamfer the pockets.


That sounds correct to me.
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Re: 7.62 x 51 primer issues

Post by Cooper » 17 Jan 2020, 11:06 am

Yeah Federal cases will be crimped. Won’t have stake marks around primer like some other cases. Just a circle indentation around primer. I thought Federal cases also had a blue (maybe red) sealant around primer.
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Re: 7.62 x 51 primer issues

Post by Faedy » 17 Jan 2020, 9:04 pm

Yep, must have been a discrete crimp.
Little bit of chamfering work around leading edge with a 5.5mm drill bit had it sorted in no time.
177 Diana
177 BSA
Ruger .22
Cogswell and Harrison .22
Cogswell and Harrison .17 HMR
Winchester 1892 32-20
Sauer mod 202 .223
Ruger Amrican .243
Remington mod 7600 .308
Howa .300 winmag
Boito .410
Adler All Weather 12 ga
Miroku mk 10 12 ga o/u
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Re: 7.62 x 51 primer issues

Post by MrSavage » 25 Jan 2020, 7:15 am

You can also buy a tool that fits in your press that will swage out the crimp. It's easier than fooling with a drill bit.

I had a thousand military cases to do.
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Re: 7.62 x 51 primer issues

Post by tophet1 » 25 Jan 2020, 9:24 am

I have the same ammo. You can either chamfer the primer pocket rim or preferably uniform the pocket with a reamer. Fantastic ammo in my Howa .308W.
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Re: 7.62 x 51 primer issues

Post by Sarco » 25 Jan 2020, 8:05 pm

While not 7.62, I picked up (free) approx 15Kg of federal 9mm cases that had, after closer examination, been crimped with an identifiable ring crimp, that defied all attempts to reprime.

I borrowed a decripming die from a mate and gradually worked my way through it, and distributed to those who wanted it through the club. But such PITA after I thought that I had struck such a master stroke.
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