Firearms Talk banner

1 - 18 of 18 Posts

·
Registered
Joined
·
17 Posts
Discussion Starter · #1 ·
Question....What is the equivelant Nato round to the .308? For instance, .223 has 5.56. On a CMMG stripped lower, it is marked 7.62, so would it be 7.62X54 or 54R?
 

·
Registered
Joined
·
7,202 Posts
7.62x51 is .308
 

·
Registered
Joined
·
7,202 Posts
Get an upper chambered in 7.62x51, then you can shoot both the 7.62 and .308 rounds. Both seem plentiful.
 

·
Premium Member
Joined
·
22,674 Posts
7.62X51 NATO is the standard cartridge of both M60 and M240 general purpose machine guns.
It's also used in the M21 and M40 sniper rifles.

There's tons of it around, but it isn't cheap.
 

·
Premium Member
Joined
·
557 Posts
We reload, all the components you need for 7.62 Nato / .308 are available everywhere.
 

·
Premium Member
Joined
·
20,098 Posts
.308 and 7.62x51 are the exact same thing
7.62x51 is .308
they are not the same.

308 is not safe to shoot in a 7.62nato chambered firearm. the lead on the throat in the 7.62nato is much shorter than a 308winchester chamber. longer ogived bullets you find in some off the shelf ammo can cause dangerous overpressure levels in a 7.62nato chamber.

its the same difference as 556 and 223 except the civvy version in this caliber is the more versatile chambering.

if you have a 7.62nato and the owners manual doesnt say it is safe to use 308winchester do NOT use ammunition off the shelf for 308winchester in it. stick with 150grain bullets or less. if you reload and want to use heavier bullets in a 7.62nato you need a chamber gage of some sort like the hornady locknload bullet comparator and chamber gage so you can find the proper lead from the ogive.
 

·
Registered
Joined
·
7 Posts
kytowboater said:
Get an upper chambered in 7.62x51, then you can shoot both the 7.62 and .308 rounds. Both seem plentiful.
Isn't the .308 a higher pressure round than the 7.62 meaning you should buy the .308 in order to shoot both? I could be wrong but I thought I read this somewhere just making sure
 

·
Premium Member
Joined
·
20,098 Posts
Isn't the .308 a higher pressure round than the 7.62 meaning you should buy the .308 in order to shoot both? I could be wrong but I thought I read this somewhere just making sure
Same pressure curve. 308 chambers are longer in lead than nato so some hunting off the shelf ammo can cause over pressure from the bullet ogive too far forward coming into contact with the rifling when chambered in a 762 nato gun. You can have a gunsmith cut a nato chamber to 308 spec then its not an issue
 

·
Registered
Joined
·
72 Posts
I was concerned about this when I started with the .308s, so I called DPMS and they told me that it doesn't matter about 7.62X51 and .308. I brought up the discussion of 5.56 vs .223 and he said it's not the same with 7.62. Maybe the people at DPMS are idiots.
 

·
Premium Member
Joined
·
22,674 Posts
The DPMS has a .308 chamber and can be used with either type ammo.
 

·
Registered
Joined
·
51 Posts
Is a rock river .308 26" bull barrel to heavy I ordered one and was told later its like having a bowling ball on the end of it am I going to be wanting to cut the barrel down
 

·
Registered
Joined
·
72 Posts
I must not have made this clear enough. DPMS told me there is no difference between 7.62X51 and .308 rounds. Not only on their firearms, but all.
 

·
Registered
Joined
·
4,747 Posts
I must not have made this clear enough. DPMS told me there is no difference between 7.62X51 and .308 rounds. Not only on their firearms, but all.
knock knock, whos there? com. com who? common sense says if they were the same they would have the same name.

a chevy camero, is different than a chevy camero ss.
 
1 - 18 of 18 Posts
Top