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Old 07-31-2009, 01:20 PM   #1
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Default Lead free Speer .45 brass

I just got a batch of Speer .45 ACP brass from their Lawman RHT lead free ammo. I noticed they have small pistol primers! I have never, ever seen small pistol primers in a .45 ACP.

Has anyone else noticed this? I wonder if a standard small pistol primer will reliably set off the powder charge? should I consider moving up to mag primers in these cases? The factory primer is their Lead free compound. I wonder if they are hotter than normal?

I will do some comparison to other brass to see if they are any thicker than normal. With the small primer pocket it may open up the possibility of use for +P loads perhaps with small rifle primers (ala' .454 Casull).

Of course all of this depends on primer supplies getting back to quasi-normal.



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Old 07-31-2009, 01:57 PM   #2
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That's news to me. I've never seen a 45 acp with a small pistol primer. let me know what you find.



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Old 08-01-2009, 02:23 AM   #3
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Winchester also had a case that used Small pistol primers.

The Winchester was called NT for NonToxic.

You can reload them if they are boxer primed but you just need to use small pistol primers.

Not a big deal is you keep them separate.

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Old 08-01-2009, 10:49 PM   #4
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Odd, it would appear that only lead free ammo has the small primers. Could it just be due to a lighter bullet and therefore a lighter powder charge?

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Old 08-02-2009, 01:41 PM   #5
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Quote:
Originally Posted by matt g View Post
Odd, it would appear that only lead free ammo has the small primers. Could it just be due to a lighter bullet and therefore a lighter powder charge?
Probably not. The smaller flash hole found in cases using the small pistol or rifle primer has been shown to produce a hotter more intense "flame" in many cases than the larger primer and larger flash hole.

Obviously the smaller primers don't have the quantity of "primer mixture", but by concentrating the burning mixture through the small flash hole apparently produces a more consistent ignition of the powder charge.

This is also true of several rifle cases such as the 6mm and 22 PPC cartridge that was developed from the 7.62X39 round that originally used a large rifle primer, but at some point during the development of the PPC, this was changed to a small rifle primer and smaller flash hole which was shown to produce superior accuracy.

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