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06-03-2023, 09:47 AM
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Federal 10mm
On a recent purchase of Federal 10mm Auto from Midway, I opened the box and found that they seem to use small pistol primers.
I compared them (visually) to some 10mm ammo that I have and the primers are definitely smaller that on the other stuff I have.
Has anyone else encountered something like this?
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06-03-2023, 09:53 AM
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10 MM has been loaded with both large and small primers for several years. Depends on manufacturer. Sig uses large primers.
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Last edited by Alk8944; 06-03-2023 at 09:55 AM.
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06-03-2023, 09:53 AM
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Yes, Federal and CCI/Speer are using SPP on the 10mm and I believe on 45ACP.
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06-03-2023, 12:19 PM
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Federal started using small pistol primers in 10mm Auto and 45 ACP with their line of non-toxic ammo, the case head stamp actually contained the letters "NT". I guess it was when CCI Speer and Federal merged that Federal and Speer went to small pistol primers for all 10mm Auto and 45 ACP loads.
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06-04-2023, 10:07 PM
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OK guys; thanks for the help. I handload, so I'll have to watch the primer size.
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06-07-2023, 08:44 AM
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Quote:
Originally Posted by stansdds
Federal started using small pistol primers in 10mm Auto and 45 ACP with their line of non-toxic ammo, the case head stamp actually contained the letters "NT". I guess it was when CCI Speer and Federal merged that Federal and Speer went to small pistol primers for all 10mm Auto and 45 ACP loads.
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That may have been when they changed to a different primer or bullet type; the original 10mm NT with the stranded zinc projectiles had large primers.
RWJ
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06-07-2023, 09:44 AM
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Yep
I've found a dozen or so SPP in 10mm and 45acp brass that's been donated to me by shooting buddies that don't reload.
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06-07-2023, 01:13 PM
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FYI
This is Federal's response to an email I sent them asking about this.
Gerhard1
We manufacture them with small pistol primers.
Thank You
Federal Ammunition
Tech Services
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06-08-2023, 08:21 AM
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Quote:
Originally Posted by RWJ
That may have been when they changed to a different primer or bullet type; the original 10mm NT with the stranded zinc projectiles had large primers.
RWJ
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[Mr. Spock voice on] Fascinating. [Mr. Spock voice off]. I assumed Federal made the switch to SP with all of their non-toxic ammo. I guess, at least with the 10mm Auto, that switch came a little later in production. That is what happens when I assume, emphasis on the first three letters. 
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