Have you ever noticed this?????


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target1911
December 14, 2007, 12:56 AM
What is different between the 45 cases on the left and the ones on the right?? The top row is the same as the bottom except that the ones on the bottom are deprimed

http://i195.photobucket.com/albums/z304/target1911/DSC01431.jpg
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GIVE UP ???

Look at the primer pockets.

The one on the left measures .170 ''''''''same as the 9mm case next to it.
the headstamp is....WIN NT 45 AUTO
.......do these take your standard small pistol primer?

The one on the right measures .207 ''''''''your standard 45 acp case.
the headstamp is....WINCHESTER 45 AUTO


I was wandering why some of my primers would get crushed. I guess I will be looking at my brass closer and toss those in the scrap can.

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Steve Koski
December 14, 2007, 01:08 AM
NT cases take small primers.

ReloaderFred
December 14, 2007, 01:37 AM
For the last several years, most of the non-toxic loads have used small pistol primers. They load and shoot just fine, but you have to segregate the cases and prime them separately. Some are also crimped, too.

Hope this helps.

Fred

trickyasafox
December 14, 2007, 03:31 AM
OMG KOSKI HAS INFILTRATED THR? just kidding, just not used to seeing you outside of GTR.

yup ditto to the above- I save em up and trade them for other brass. some people like em, I don't like to play with two different primer sizes in the same caliber. same drama you get with 7.62x39 brass actually.

Steve Koski
December 14, 2007, 02:03 PM
TAF? ? ?

You out of prison already?

Eightball
December 17, 2007, 12:50 AM
So, WHY do the NT take small primers? Is there some inherent value there that I'm missing?

jimmertoons
December 17, 2007, 01:55 AM
Because of the properties of the NT (non-toxic) primers, the manufacturer was able to get the correct primer pulse out of a small primer. The NT primers were formulated to get rid of the mercury in the old formulation. I have loaded using regular small pistol primers, and had no signs of pressure problems.

ReloaderFred
December 17, 2007, 11:14 AM
Actually, it's the lead styphnate they're removing from the priming compound. Mercury was removed when they went to non-corrosive primers before World War II in commercial ammunition, and the early 1950's in U.S. military ammunition.

The reason for the small primer pockets is the burning characteristics of the non-toxic priming compound is different than the lead styphnate. The new primers would back out of the primer pockets, so the first fix that was tried was crimping them in with a heavy crimp. The next fix was to enlarge the flash hole, and the final fix has been to make them in small pistol primer size.

I load and shoot them all the time. You just have to sort them, and prime them separately, and then load as normal.

Hope this helps.

Fred

target1911
December 19, 2007, 11:59 PM
Yes it helps a lot. Thanks to everyone.

bobotech
December 20, 2007, 01:46 AM
Neat thread. I loaded up about 250 rounds over the weekend and ended up with about 25 of these WIN NT cases. I noticed the same thing. I just primed them up manually and loaded them up normally.

I have them segregated though to see if they feel any different.

bl4ckd0g
December 20, 2007, 10:30 PM
Does primer size really make a difference? Could sm rifle or sm mag rifle primers make up for the change in primer size?

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