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Primers Will Not Seat

This is a discussion on Primers Will Not Seat within the Shotgun Reloading forums, part of the Shotgun Forum Discussions category; I am new to shotgun reloading (but have done rifle/pistol for decades). I have two bunches of 12ga Remington/Peters hulls: some with corrogated sides and ...



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Old 11-16-2020, 10:11 AM   #1
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Primers Will Not Seat

I am new to shotgun reloading (but have done rifle/pistol for decades).

I have two bunches of 12ga Remington/Peters hulls: some with corrogated sides and some with smooth sides ("Premier STS").

I am using W209 primers.

I loaded up the corrogated shells just fine. But when I went to reload the smooth sided shells the primers would not seat.

The friend from whom I bought the reloading equipment and supplies remembers that there are two different primers sizes but I can only find 209 primers online.

Is that right? Would the same company have two different primer sizes? Or am I doing something else wrong?
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Old 11-16-2020, 10:51 AM   #2
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Check your primers with a micrometer and see what is going on with the size difference. I think Fiocchi primers are .001 or .002 over size.

Last edited by packrat; 11-16-2020 at 10:56 AM.
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Old 11-16-2020, 12:41 PM   #3
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My Win 209s go in Remington hulls - every type - just fine; they're what I have been using for 20 years without an issue.

What reloader are you using?
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Old 11-16-2020, 12:47 PM   #4
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Originally Posted by edipser View Post
I loaded up the corrogated shells just fine. But when I went to reload the smooth sided shells the primers would not seat.
You might have to change the set-up on your press. By "would not seat"
what do you mean?? By a little, catch your finger nail on them, or a lot, stops the press from indexing??

Steve
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Old 11-16-2020, 02:16 PM   #5
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This might help...
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Old 11-16-2020, 03:42 PM   #6
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To answer the question, I am using MEC 650.

I took measurements as suggested and I cannot find any difference between either the primer pockets or the spent primers. As far as I can tell they are exactly the same dimension.

What may be different is the interior of the shell. It seems that there is a plastic insert in each that sits above the base. And that is a different thickness between the corrogated and smooth shells. If that is what the powder feed rod is pressing against then it would explain why one would seat and the other not.

So, as someone suggested, I guess I need to lower it for the smooth shells.

Doest that make sense?
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Old 11-16-2020, 03:45 PM   #7
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desmobob..Thanks for posting the primer diagram. packrat
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Old 11-16-2020, 04:29 PM   #8
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Originally Posted by edipser View Post
So, as someone suggested, I guess I need to lower it for the smooth shells.

Doest that make sense?
Yes.
There is also a brand of hull, I have long forgotten which one, that has a plastic lip that interferes with good primer seating the first time they are reloaded.
The fix was to run a drill bit of the correct size up there and remove the lip.
Once again, I have forgotten the correct size of the bit, but I do remember it was a number drill, not fractional.

Steve
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Old 11-17-2020, 11:06 AM   #9
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That was it, it works now. Thank you!
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Old 11-18-2020, 07:56 PM   #10
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Originally Posted by SteveY View Post
Yes.
There is also a brand of hull, I have long forgotten which one, that has a plastic lip that interferes with good primer seating the first time they are reloaded.
The fix was to run a drill bit of the correct size up there and remove the lip.
Once again, I have forgotten the correct size of the bit, but I do remember it was a number drill, not fractional.

Steve
Or a phillips head screwdriver.......The plastic is interfering with your primer...........NOT THE PRIMER SIZE.
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