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Why are these primers different?..?

C6493279-BBAA-4129-9A2C-F8C8A4979FBE.jpeg These primers are Federal GMM Large Rifle primers that came from 1 box. Why are some of the anvils red and some brass colored. Does this make any difference?
 
Looks like the sealant was applied (sprayed) before vs after seating the anvil in the cup, or oversprayed.

It shouldn't make a difference. . . but if I had a dime for every time someone told me "nothing changed" and I proved that something had, I'd be a rich man.
 
Happened to me maybe 10 years back now. They said that they'd come off different lines. I said that's the last time I use Federal.
 
I called Federal and asked the same thing and was told they did extensive studies on that and it has no affect on performance whatsoever!
The thing is, you don't know if there's a little more to their statement. I.e., ".. that you'd ever notice"
 
I think the point is... they're Gold Metal Match primers. We pay the premium for consistency.
 
I called Federal and asked the same thing and was told they did extensive studies on that and it has no affect on performance whatsoever!
I wonder why they needed to extensive test when they could just change their process a little so it didn’t happen. Sounds like the extensive test really wasn’t that extensive,
 
Looks like the sealant was applied (sprayed) before vs after seating the anvil in the cup, or oversprayed.

It shouldn't make a difference. . . but if I had a dime for every time someone told me "nothing changed" and I proved that something had, I'd be a rich man.
I don’t think I’ll be using these if it’s really important.
 
I know you shouldn't have to, however, if you have the time and the inclination, maybe sort 5 - 10 of each and compare MV.
 
I know you shouldn't have to, however, if you have the time and the inclination, maybe sort 5 - 10 of each and compare MV.

Or not use them and save them for those who like them are winning matches with them? I can see your visual concern, I thought the same thing but once you seat them nobody will ever know :cool:
 
Ease your mind and test them. If they show a difference on paper, toss them. If not, just one less thing to worry about.
 
My take on this...

All 210m have the green foil.. If you look closely you'll see the red is just like a dry paint layer they put on them so they can differentiate between 210m and 215 (215 is purple paint instead of red).

and this dry paint sometimes doesn't cover the whole primer properly.
 
Recently used some Federal Gold metal match small rifle primers with a load I knew to be very accurate . I was surprised to find that was not the case with the Federal primers ! The groups were all over the place even though everything else was the same. Going back to CCI BR-4
 
I know you shouldn't have to, however, if you have the time and the inclination, maybe sort 5 - 10 of each and compare MV.
I just counted and have around 500 of these and will probably do what you suggest before long Thanks
 
Recently used some Federal Gold metal match small rifle primers with a load I knew to be very accurate . I was surprised to find that was not the case with the Federal primers ! The groups were all over the place even though everything else was the same. Going back to CCI BR-4

Thanks for posting this Mike. It's a real eye opener to me when a fella can't trust Federal GMM small rifle primers. Again, thanks for posting. WD
 

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