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  #1  
Old 04-17-2017, 07:08 PM
docvinyl33 docvinyl33 is offline
 
Join Date: Apr 2013
Location: Pennsylvania
Posts: 82
Default PPU cycling problem?

Went to the range with my new batch of PPU 30.06 ammo and had problems with 3 of the 7 clips I used. (The clips were clean and Garand lubed in the correct places). The rounds just hung up in the clips and would not chamber. When I got home I compared the PPU ammo with the CMP Greek ball I usually use. It would appear that the PPU ammo is just a tiny bit wider. This might explain the extremely tight fit in my clips.
Anyone else experience this problem?
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  #2  
Old 04-17-2017, 08:48 PM
gwfrench gwfrench is offline
 
Join Date: Jan 2015
Location: Frederick, MD
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It is the size of the extractor grooves.
PPU has 30-06 sized grooves while HXP has larger 308 size grooves.
The L&H and JMO clips used for most post 1972 clipped HXP generally will not work well with PPU. They sort of bulge because the small groove cannot seat properly inside the clips.
USGI clips are my first choice for use with PPU.

From a quick look at my brass, it looks like HXP changed to the larger extractor groove size about 1971. I found 1971 brass with large and small grooves. After 1971 it is all large grooves, pre-1971 it is all small grooves.
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  #3  
Old 04-17-2017, 08:58 PM
Stewbaby Stewbaby is offline
 
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^this A+++, needs to be a sticky
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  #4  
Old 04-18-2017, 07:59 AM
GM1MAN GM1MAN is offline
 
Join Date: Oct 2014
Posts: 590
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Quote:
Originally Posted by gwfrench View Post
It is the size of the extractor grooves.
PPU has 30-06 sized grooves while HXP has larger 308 size grooves.
The L&H and JMO clips used for most post 1972 clipped HXP generally will not work well with PPU. They sort of bulge because the small groove cannot seat properly inside the clips.
USGI clips are my first choice for use with PPU.

From a quick look at my brass, it looks like HXP changed to the larger extractor groove size about 1971. I found 1971 brass with large and small grooves. After 1971 it is all large grooves, pre-1971 it is all small grooves.
This!
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  #5  
Old 04-19-2017, 10:35 AM
edlmann edlmann is offline
 
Join Date: Oct 2009
Location: lovely downtown Central Florida
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Quote:
Originally Posted by gwfrench View Post
It is the size of the extractor grooves.
PPU has 30-06 sized grooves while HXP has larger 308 size grooves.
The L&H and JMO clips used for most post 1972 clipped HXP generally will not work well with PPU. They sort of bulge because the small groove cannot seat properly inside the clips.
USGI clips are my first choice for use with PPU.

From a quick look at my brass, it looks like HXP changed to the larger extractor groove size about 1971. I found 1971 brass with large and small grooves. After 1971 it is all large grooves, pre-1971 it is all small grooves.
Here's a graphic illustration of the problem:


Not my pic, but I can't remember where I got it.
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Last edited by edlmann; 04-19-2017 at 08:35 PM.
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  #6  
Old 04-19-2017, 06:43 PM
docvinyl33 docvinyl33 is offline
 
Join Date: Apr 2013
Location: Pennsylvania
Posts: 82
Default PPU ammo

Thanks for the important info. Thought I had USGI clips but apparently not. Looks like i will have to get new clips for this ammo
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  #7  
Old 04-19-2017, 07:00 PM
GM1MAN GM1MAN is offline
 
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Posts: 590
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AEC 3 en blocs will work fine if you can not find USGI.
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  #8  
Old 04-20-2017, 06:27 PM
docvinyl33 docvinyl33 is offline
 
Join Date: Apr 2013
Location: Pennsylvania
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AEC 3 en blocks are they ones that wouldn't cycle. Are USGI en blocks marked USGI?
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  #9  
Old 04-20-2017, 06:39 PM
GM1MAN GM1MAN is offline
 
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Sorry about the AEC 3's that you have. Mine work fine, maybe yours are the older ones?

Go to ammogarand.com, he lists all USGI en blocs. You will be looking for BRW, SA, small sa, DAQ, WEP, IS, etc.

Shoot me a PM when you get a chance and I can probably send you in the right direction.

HTH.
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  #10  
Old 04-20-2017, 06:50 PM
docvinyl33 docvinyl33 is offline
 
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Location: Pennsylvania
Posts: 82
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Thanks for getting back to me. That is great info. At least I know what to look for.
Thought about ammogarand and will check out there clips.
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