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  #31  
Old 05-24-2017, 07:46 AM
NMC_EXP NMC_EXP 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.

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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  #32  
Old 05-24-2017, 07:54 AM
Shomway Shomway is online now
 
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Speaking of Federal Match, Palmetto has a deal going...$15.99.
http://palmettostatearmory.com/feder...=11%3a00+Email
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  #33  
Old 05-24-2017, 06:40 PM
Ketiwa-SG Ketiwa-SG is offline
 
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Was 15.99 but now showing 19.99.
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  #34  
Old 05-27-2017, 07:13 AM
VinnAY VinnAY is offline
 
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Quote:
Originally Posted by GM1MAN View Post
There is really no change from the 9th Edition to the newer 10th Edition, so if you can find the 9th Edition at a cheaper price, it will serve you well.

HTH.
Amazon has the 9th ed, $14 if any one needs it.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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  #35  
Old 04-09-2020, 02:22 PM
morris5150 morris5150 is offline
 
Join Date: Dec 2009
Location: USA
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Default Recommended ammo for M1A?

Hi everyone,

I bought a M1A a week ago and was looking for recommendations on what commercial or surplus ammo I should buy for 'plinking'. I see that the CMP carries several types of .308 ammo The M1A manual states: "The M1A™ is designed and built to specifications to shoot standard factory .308 made to SAAMI specifications or 7.62x51 NATO ammunition. The specifications for standard military ammunition include harder primers to withstand the slight indentation from the firing pin when the bolt chambers a cartridge. This slight indentation is normal. The use of civilian ammunition with more sensitive primers or handloads with commercial primers and/or improperly seated primers increase the risk of primer detonation when the bolt slams forward. This unexpected “slam fire” can occur even if the trigger is not being pulled and if the safety is on. Use of military specification ammunition will help avoid this.

Suggestions? Thanks in advance!
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  #36  
Old 04-09-2020, 04:41 PM
nate nate is offline
 
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The things you mention are not a problem in the M14/M1A, the bolt is shorter, the firing pin is shorter and it does not generate enough inertia to set off a primer. I have shot close to ten thousand rounds of reloaded ammunition using federal 210M primers with never a problem. The things you mentioned do exist with the M1 but not the M14.

Last edited by nate; 04-09-2020 at 04:44 PM. Reason: Spelling
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  #37  
Old 04-09-2020, 04:49 PM
m1ashooter m1ashooter is offline
 
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Stay away from any 7.62 from India, Pakistan and Malaysia. I had a M1A for decades and mine didn't like Winchester White Box but loved Brit Radway Green Surplus. Privi is good ammo. So is this.

https://www.sgammo.com/product/308-w...us-ammo-read-d

https://www.gunbroker.com/All/search...13&PageSize=96
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  #38  
Old 04-10-2020, 12:05 PM
navyrifleman navyrifleman is offline
 
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Either match ammo with 168 grain bullets or ball ammo would work fine in the M1A. .308 winchester is basically the same cartridge as 7.62mm NATO.

Most commercial ammo should be OK in your rifle. If a company makes ammo designed to be fired from the M1A or other semi automatic rifles, then it is probably pretty close to what the military uses as ball or match ammo.

When it comes to reloading, you have to remember that your rifle is a semi-auto and recommended starting loads in some reloading manuals might not generate enough pressure to cycle your action. At the other end of the spectrum, the hotter/ higher pressure loads might over stress your rifle. Another consideration is that some loads are "dirtier" than others and might cause the gas system to clog up sooner than match or ball ammo loads.

Most reloading manuals have loads that work well in bolt action rifles, but you have a smaller window of options with a semi automatic.

Most reloaders who load for the M1A stick with certain bullet weights and powders, which are published in manuals specifically aimed at M1A/ M14 semi auto rifles.

Best of luck with your new rifle! I shot the M14 National Match rifle and it was super accurate, and a lot of fun to shoot.
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  #39  
Old 04-10-2020, 02:00 PM
DougS DougS is offline
 
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Quote:
Originally Posted by m1ashooter View Post
Stay away from any 7.62 from India, Pakistan and Malaysia. I had a M1A for decades and mine didn't like Winchester White Box but loved Brit Radway Green Surplus. Privi is good ammo. So is this.

https://www.sgammo.com/product/308-w...us-ammo-read-d

https://www.gunbroker.com/All/search...13&PageSize=96
I'm not clear what the issue with Malaysian ammo is, other than it is berdan primed and not reloadable by most people.

American Marksman has decent ammo, but they are out of stock currently.
https://www.theamericanmarksman.com/...mmo_c_198.html

Ammo Supply Warehouse normally carries decent 7.62x51/308, but they are pretty cleaned out as well right now.
https://www.ammosupplywarehouse.com/...=index&cPath=2

Ammoseek will do compares of what is available. I have excluded steel case in this search. Be careful in that if you plan on reloading in the future to look for boxer primed cartridges.
https://ammoseek.com/ammo/308-winchester?ekw=steel

If/when reloading my pet loads are 40.0 grs 3031 under a 155gr HPBT or 39.0 grs 3031 under a 168 gr HPBT. My informal load is AA2460 with the Hornady 150gr FMJ.
You can get pulldown LC brass from American Marksman or Rocky Mountain Reloading. This is GI brass, still primed, that the 147 gr bullet was pulled and the powder dumped. Some of the brass is cosmetically challenged, but still viable.
https://www.rmrbullets.com/shop/case...rass-1-pulled/
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  #40  
Old 04-10-2020, 04:42 PM
jdwboy jdwboy is offline
 
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Usually .308 is hotter that 7.62x51.. If your barrel is USGI, I'd be careful with .308. Commercial barrels are probably .308 chamber not 762x51 as is the USGI.
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