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  #1  
Old 04-18-2017, 01:49 PM
USAR1957 USAR1957 is offline
 
Join Date: Nov 2009
Location: Atlanta Suburbs
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Default Ammo for M1A

Just ordered a NIB Springfield M1A and started to research what ammo to use in the rifle. Apparently, it has the same problem as the Garand with digesting commercial ammo. Such as the higher pressures generated by the commercial .308 round, etc.

How much harm could be done to a new M1A's machinery by using .308 v ammo loaded to the NATO 7.62 standard?

Also, thoughts on any particular brand of mil spec ammo out there that I should shoot?

Hope I am not opening a can of worms here!

Thanks for any input.

Last edited by USAR1957; 04-18-2017 at 01:55 PM.
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  #2  
Old 04-18-2017, 02:24 PM
GM1MAN GM1MAN is offline
 
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Here's what I shoot in mine with zero issues:

HXP 7.62x51 FMJ from the 1980's.
ZQI .308 FMJ recent manufacture.
Hirtenberger 7.62X51 FMJ circa 1975, 1980.
LC 7.62X52 FMJ circa 2015, 2016.
PPU 7.62X51 FMJ, recent manufacture.

Federal .308 Win. 168 grn. BTHP Match (available from CMP)
Made for the M-1A, American Eagle 7.62x51 168 grn. OTM BTHP (available from CMP)

I have also fired other factory ammo, Perfecta .308 147 grn. FMJ, PMC 150 grn. .308 Win 150 grn. PSP for example, but I used a Schuster over-bored gas plug. I do not use it with any of the other ammo, but I find that it is sometimes difficult to find out specifications about all types of factory .308 ammo.

A good ammo website to use, among others is www.sgammo.com, they sell a lot of different ammo suitable for the M1-A and I have had good luck purchasing from them.

Go on over to the M14forum and you will find a wealth of knowledge there about different ammunition that is suitable for the M1-A.

As a side note, I do not shoot steel cased ammunition of any kind in my M1-A's.

HTH.

Last edited by GM1MAN; 04-18-2017 at 02:28 PM. Reason: added info.
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  #3  
Old 04-18-2017, 03:06 PM
oodnoodn oodnoodn is offline
 
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Federal Gold Medal Match is currently available from several online suppliers for a buck a round with free shipping on a 200 round order.

That is the gold standard for shooting tiny groups with a M1A/M14, or AR10 type for that matter. You'll look for a long time to find a store-bought ammo that shoots as good or better, & if you reload you'll have to up your reloading game to match it.
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  #4  
Old 04-19-2017, 07:59 AM
USAR1957 USAR1957 is offline
 
Join Date: Nov 2009
Location: Atlanta Suburbs
Posts: 16
Default Ammo for M1A

Quote:
Originally Posted by GM1MAN View Post
Here's what I shoot in mine with zero issues:

HXP 7.62x51 FMJ from the 1980's.
ZQI .308 FMJ recent manufacture.
Hirtenberger 7.62X51 FMJ circa 1975, 1980.
LC 7.62X52 FMJ circa 2015, 2016.
PPU 7.62X51 FMJ, recent manufacture.

Federal .308 Win. 168 grn. BTHP Match (available from CMP)
Made for the M-1A, American Eagle 7.62x51 168 grn. OTM BTHP (available from CMP)

I have also fired other factory ammo, Perfecta .308 147 grn. FMJ, PMC 150 grn. .308 Win 150 grn. PSP for example, but I used a Schuster over-bored gas plug. I do not use it with any of the other ammo, but I find that it is sometimes difficult to find out specifications about all types of factory .308 ammo.

A good ammo website to use, among others is www.sgammo.com, they sell a lot of different ammo suitable for the M1-A and I have had good luck purchasing from them.

Go on over to the M14forum and you will find a wealth of knowledge there about different ammunition that is suitable for the M1-A.

As a side note, I do not shoot steel cased ammunition of any kind in my M1-A's.

HTH.


Thanks for quick response and ammo info. I have Mosin Nagant and can only find steel case Russ ammo. I had already decided against steel in any of my other guns. Some initial ammo research had me leaning toward Previ or LC. One entry I read talked about how "hot" Hertinberg ammo was so it started me wondering if it would cause problems with internals of rifle over time. Thanks again for the info.


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Last edited by USAR1957; 04-19-2017 at 08:01 AM.
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  #5  
Old 04-18-2017, 03:25 PM
YahooMarine YahooMarine is offline
 
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"Apparently, it has the same problem as the Garand with digesting commercial ammo. Such as the higher pressures generated by the commercial .308 round, etc."

Where did you hear that? I do not believe that is an issue with the M1A/M14 family of rifles.

Currently I am using ZQ1 (WalMart), PPU in both 7.62 and .308, and Win 7.62 white box in my M1A and Fulton M14 receiver with mostly my GI parts. Both rifles shoot better than I can with this ammo. Also, I am currently using this ammo in my 2 M1 Navy mod 2s built on CMP barreled receivers with no issues.

There is some Atomic brand ammo that is too hot so avoid that brand.

Rich
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Last edited by YahooMarine; 04-18-2017 at 03:30 PM. Reason: added info
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  #6  
Old 04-19-2017, 08:16 AM
USAR1957 USAR1957 is offline
 
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Quote:
Originally Posted by YahooMarine View Post
"Apparently, it has the same problem as the Garand with digesting commercial ammo. Such as the higher pressures generated by the commercial .308 round, etc."

Where did you hear that? I do not believe that is an issue with the M1A/M14 family of rifles.

Currently I am using ZQ1 (WalMart), PPU in both 7.62 and .308, and Win 7.62 white box in my M1A and Fulton M14 receiver with mostly my GI parts. Both rifles shoot better than I can with this ammo. Also, I am currently using this ammo in my 2 M1 Navy mod 2s built on CMP barreled receivers with no issues.

There is some Atomic brand ammo that is too hot so avoid that brand.

Rich


My comment about pressure and possible rifle damage was prompted by reading one of the ammo suppliers posts about the difference between military 7.62 NATO and commercial .308 Win loads. It discussed the higher pressures generated by .308 ammo because it is generally loaded with different propellant and heavier bullets intended to take large game animals at distance. So, I ******-u-me that it would cause very rapid and hard cycling which might cause damage to my rifle similar to possible op rod failure in the Garand by shooting ammo not loaded to M1 specs. I did not want to bend a brand new rifle the first time out by shooting the wrong ammo in it. Appreciate your response, getting some VG info.


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  #7  
Old 05-24-2017, 07:46 AM
NMC_EXP NMC_EXP is offline
 
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Location: New Mexico
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Quote:
Originally Posted by YahooMarine View Post
"Apparently, it has the same problem as the Garand with digesting commercial ammo. Such as the higher pressures generated by the commercial .308 round, etc."

Where did you hear that? I do not believe that is an issue with the M1A/M14 family of rifles.

Rich
The OPs concern is valid. Both the M1 Garand and the M1A can be damaged by excessive port pressure.

Since we end users cannot measure chamber pressure or port pressure and ammunition manufacturers do not supply that info all we can do is stay below 180 grain bullets and use a powder with a burn rate in the IMR4895 range.

As to NATO ammo pressure specs, far as I know the M14 was the only NATO rifle which had a problem with high port pressure and it has been obsolete for a long time. So there is no reason to believe current NATO pressure specs are designed around M14 requirements.

All I know for certain is M1A competitors have shot truck loads of Federal 168 grain match ammo and 168 and 175 grain reloads with IMR4895 and similar burn rate powders without negative effects.

Op rods are expensive so those two options are what I will stick with.
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“After all is said and done, successful rifle shooting on the range is nothing more than first finding a rifle and lot of ammunition which will do precisely the same thing shot after shot, and then developing the same skill in the rifleman.” ~ Capt. E. C. Crossman (Book of the Springfield)
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  #8  
Old 04-18-2017, 03:43 PM
nf1e nf1e is offline
 
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.308 and 7.62 x 51 ammo are the same thing. Just keep your bullet weight under 180 gr.

Pressures are measured differently, but are 6 of one, half a dozen of the other.
Don't listen to the myths of the internet and you will do just fine.

Semper Fi
Art
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  #9  
Old 04-18-2017, 05:25 PM
YahooMarine YahooMarine is offline
 
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Art: What do you think about the reports that the Atomic 7.62 (or are they .308?) reloads sold by CMP a few years ago is too hot. I have a can that I am sitting on rather than risking a case failure.

Thanks, Rich
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  #10  
Old 04-18-2017, 05:43 PM
nf1e nf1e is offline
 
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Quote:
Originally Posted by YahooMarine View Post
Art: What do you think about the reports that the Atomic 7.62 (or are they .308?) reloads sold by CMP a few years ago is too hot. I have a can that I am sitting on rather than risking a case failure.

Thanks, Rich
Excellent question Rich. I have a bunch of it setting in the stash but haven't shot any. Can says .308 and 2600fps with Nosler 168 gr match bullet in once shot military casings. I don't think I even opened a can of the stuff yet.
99% of my shooting is with home rolled fodder.
I will be happy to report back to you in the next couple of days. Great time to break open a can and giver her the dickens. See what it chronos at.



Semper Fi
Art

Last edited by nf1e; 04-18-2017 at 05:47 PM.
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