Most modern 7.62NATO rifles are rated for .308 chamber pressures

Load data is the same for .308/7.62 and .223/5.56. Same die. Same powder charge. I wouldn’t worry too much about it.

SAAMI says it’s ok. I’ve been doing it for thousands of rounds over the course of a few decades. It’s just fine.

I love how people say you can’t and act like the gun will blow up after one shot lol it’s hilarious

I’ve yet to see any of my 7.62x51s explode due to running 308

My AT AR fires both 5.56 & 2.23

556 has higher pressure because it uses a different measurement standard. There is a physical difference between 556 and 223 chamber cuts in a barrel with 556 having more throat to allow more bullet stick out or jump for rounds like tracers.

For the last twenty years or more, many barrels come with both marked on the barrel. These are my four or two depending on how you look at its calibers. My guess is many of the guys telling you what you can't do have never had much trigger time with those rounds or weapons. I have been using all four rounds in two guns since the 70s.

Can’t just say 223 chambered barrel bro because that’s wrong. You can shoot 556 out of a 223 Wylde barrel but not a 223 Remington barrel. Gotta be more Pacific 🌊 🌚

Ruger mini 14 has the free bore to allow firing 5.56 safely

I fire both usually 223 but no issues with 556.

Good information. I recently found out that a lot of folks don’t know this.

Answer please .308inch is 7.82mm while 7.62mm is less in diameter then 308?

Nailed it

I've been thinking about buying a 7.62. But I might change my mind to a 308.

What about a subsonic 308? Could I fire it out of 7.62?

That’s a .223 gold dot bonded soft point. Love those and federal fusion.

Have you ever seen a rifle cambered in 7.62x51 in the civilian market?

Damn I’ve. Been doing both

Was this written by a twelve year old?

Can you fire 762 NATO out of a karabiner 98k

Valuable info. This may be a quality KZfaq channel we’ll see!

Bro I’ve been shooting 5.56 out of a cult supporter for the past five years. Don’t tell me what I can’t do.

But you can shoot a 2.23 out of a gun chambered in 5.56

California, no problem. Can't buy em.

The reasoning for the 7.62 Nato is funny. First the USA wanted a very powerful cartridge against the east, that's also the reasoning for the FAL basically. But then the USA wanted a cartridge that weights less so they came up with the 5.56 NATO, making the 7.62 NATO nearly obsolete. Of course it sees its use still today, still its kinda dumb

Thos argument is so old. As Ling as your gun wasn't made with plastic...it's fine send it. Modern chambers no matter the caliber are designed to withstand pressures well above Sammi specs and the differences are minimal. I've shot both in both. 223 does have a shorter throat spec on the chamber than the 556. That's why the "pressure differences" but it's not enough to matter unless it's a custom built 223 varmint rifle for like 35 or 40 grain bullets. Send it. And stop talking about stuff you haven't done first hand. I've shot both 556 and 223 out of both 556 and 223 rifles. And I've done the same with 308 and 7.62. The only thing I saw was a little bit of primer burn on the 223 bolt gun I was using. That's it. Means that some gas was escaping around the primer and hitting the bolt causing a primer ring. After 1500 rounds it was still just fine.

This is a complete myth, 556 and 223 are almost the same round, with like a 30fps difference, 762x51 and 308 aren’t different at all, same fps and same ballistics

But you can shoot a .223 out of 5.56

BS and BS.

“It’s the gun guy, I like spending my free time spreading false information on social media”

So you’re telling me I can fire a 7.62 Out of my AR 10 308?

My Rock River arms AR 10 can handle 308 looked it up

223 wylde can shoot 556