45 ACP brass primer pockets

Swampman1 · July 29, 2013, 11:32 AM

I was rummaging through some 45ACP range brass that I've cleaned and deprimed, and noticed some had smaller primer pockets than most. The culprits seem to have Federal headstamps, and a few Blazer headstamps. But mostly Federal. However, as shown in photo, a few Federals had the normal sized large primer pocket. Do some of these come with small rifle primers?

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floydster · July 29, 2013, 01:05 PM

Do a search.

Misssissippi Dave · July 29, 2013, 05:41 PM

Yes, now you will find them with both large and small primers. If you look at the federal large and small you should notice a different font along with a couple of other changes. These days you need to look closely and separate the cases at least by primer size.

howlnmad · July 29, 2013, 06:03 PM

Yup. You will find 45acp with both small and large primer pockets. There is nothing wrong with them except that they can sure mess up your pace when you try to shove a large primer into one. Keep them seperated and reload them.

Misssissippi Dave · July 29, 2013, 08:38 PM

With the powder I use I see a small reduction in bullet speed and the small primer, with everything else being the same. I would never have known there is a difference had I not run both through a cronograph.

July 29, 2013, 11:32 AM	#1
Swampman1 Senior Member Join Date: February 17, 2013 Location: South Louisiana Posts: 432	45 ACP brass primer pockets I was rummaging through some 45ACP range brass that I've cleaned and deprimed, and noticed some had smaller primer pockets than most. The culprits seem to have Federal headstamps, and a few Blazer headstamps. But mostly Federal. However, as shown in photo, a few Federals had the normal sized large primer pocket. Do some of these come with small rifle primers? DUPLICATE POST...DISREGARD Last edited by Swampman1; July 29, 2013 at 11:41 AM.

July 29, 2013, 01:05 PM	#2
floydster Senior Member Join Date: May 26, 2008 Posts: 472	Do a search.

July 29, 2013, 05:41 PM	#3
Misssissippi Dave Senior Member Join Date: December 5, 2009 Posts: 1,411	Yes, now you will find them with both large and small primers. If you look at the federal large and small you should notice a different font along with a couple of other changes. These days you need to look closely and separate the cases at least by primer size.

July 29, 2013, 06:03 PM	#4
howlnmad Senior Member Join Date: April 29, 2009 Location: Harriman Tn Posts: 424	Yup. You will find 45acp with both small and large primer pockets. There is nothing wrong with them except that they can sure mess up your pace when you try to shove a large primer into one. Keep them seperated and reload them.

July 29, 2013, 08:38 PM	#5
Misssissippi Dave Senior Member Join Date: December 5, 2009 Posts: 1,411	With the powder I use I see a small reduction in bullet speed and the small primer, with everything else being the same. I would never have known there is a difference had I not run both through a cronograph.