.308 vs 7.62?

[Johnny C]

I read somewhere that .308 and military 7.62 ammo isnt interchangable due to headspace or some such.

Anyone know the skinny on this?

I recently bought a socom2 and have been shooting store bought .308...is this a bad idea due to ^

I would assume my SA is chambered for mil spec ammo, but I don't know for sure.

 

[Expat]

You can shoot either one through your SA Socom2.

 

[melensdad]

308 and 7.62 are the same.

223 and 5.56 are NOT the same. Case dimensions are the same. Load pressures are dramatically different. Chamber/throat/leade dimensions are different.

 

[Expat]

The SA Socom 2 is chambered .308 Winchester.
I will refer you to this website for further info. http://www.thegunzone.com/30cal.html

Note this key part:

But as Clint McKee and Walter Kuleck of Fulton Armory note on their "award-winning" website:

They are the same, 'cause nobody makes 7.62mm (NATO) ammo that isn't to the .308 "headspace" dimension spec. So 7.62mm ammo fits nicely into .308 chambers, as a rule.​

 

[kludge]

7.62x51mm (7.62 NATO) is loaded to a lower pressure than .308 WIN.

It matters if you have an old gun like and Ishapore.

 

[hc4sar]

Try http://www.6mmbr.com/
click on .308 page and read away . there is a difference in the cases !

 

[Lock n Load]

M1A ammo?

Here is an email exerpt from SAInc. concerning what ammo is safe in the M1As:

We would recommend 168 grain Federal Match or Black Hills ammunition for the best accuracy.
You can use .308 factory ammunition made to SAAMI spec.
You can also use 7.62 x 51 military surplus ammunition with the NATO stamp on it.
You can use anywhere from 147-180 grain ammunition – nothing over 180 grain.
Thank you for your interest in Springfield.

HTH,

 

[sixspeed042]

doesnt matter at all. i've put mil spec 118lr 7.62 nato through rem 700's, m1a's and put .308's through FAL's. I