7.62x51 and .308

308 not 762x51 mm

name one incedent,when a 308 or 762x51 mm was damaged or destroyed by a factory loaded bullet,and were thus deemed unsafe to interchange,by sammi or other ammo makers please reply:cool:
 
I had a Saiga AK-47 rifle 16" barrel that was marked .308 Win 7.62x51 on the receiver. It did excellent with Remington 150 gr PSP bullets.

308_saiga_rem150psp.jpg
The 308 has a bit more pressure than the 7.62 NATO but nothing worth loosing sleep over. Nearly all rifles are proofed to 125% of rated load designation anyway.
 
"A .308 rifle will shoot both no problem. Not so the other way around."
"The 308 has a bit more pressure than the 7.62 NATO"

Pure internet garbage. It's simple, and been similarly stated above..........Your aunt is your mothers sister. Two IDs, same person. The .308 Win. is simply the civilian version of the military 7.62x51.
 
"The 308 has a bit more pressure than the 7.62 NATO"
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This isn't "internet garbage", since it is a fact, and has been long before the existence of the internet.

But, "a bit more pressure" doesn't mean much to most rifles, only to some. And its HOW that pressure is delivered that matters, to those rifles that it does.

Also, HOW you measure the pressure matters. One system can give you much higher or lower numbers than another.

Consider just this, original 7.62NATO (7.62x51mm) specs call for a load that duplicated the 150gr USGI .30-06 loading, approx. 2740fps +/-.

.308 Win 150gr commercial loads run 2820fps (avg - published data in old Gun Digest books and other places) and some makers claim higher velocities, into the 2900fps range.

to get these kinds of numbers (same length barrels) there must be a pressure difference. Generally, its no big deal. In a specific rifle, it might be, but other factors besides just the load pressure play a big part as well.

Rifles like the CETME (HK 91, etc) need a particular level of "hardness" to the brass to work right (along with pressure in the correct range). Gas operated autos depend on port pressure being in the correct range (FOR THEM), and a load's pressure curve, that doesn't matter a bit in a bolt action can be a huge deal in a semi auto.

That box of Remchester ammo is NOT exactly the same as GI Milspec 7.62 NATO in any way other than exterior dimensions. Whether the difference is a matter of importance in your rifle, or mine, is another matter. For most rifles, they are interchangeable and of no practical difference, other than downrange performance.
 
"This isn't "internet garbage", since it is a fact, and has been long before the existence of the internet."

It is only a fact if you pick and choose the factory loads you count. Otherwise, any comparison between factory loads of similar bullet and powder weights will show no difference in pressure. You cannot make the blanket statement that .308 loads are higher pressure than 7.62x51 loads.......it just ain't so.
And that's about all I'll have to say on this topic that has been proved and beat to death on just about every gun website I frequent, multiple times ;)
 
You cannot make the blanket statement that .308 loads are higher pressure than 7.62x51 loads.......it just ain't so.
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So, how do you explain higher velocity with the same bullet weight from the same size case without higher pressure? (from equal barrel lengths)

I didn't say dangerously higher pressure, just higher pressure.

I'm looking at commercial sporting ammo vs GI ball.
 
Own experiance was the military 7.62 reload caseing got stuck in my Savage 99 hunting rifle, had too use the cleaning rod to punch out the bugger :mad:
Last time I used army amo for target praktice.
 
The 7.62x51 brass is/could be thicker than 308Win causing a difference in pressure with the same powder and charge weight. The 30-06 higher case volume gives it an advantage for bullets heavier than 150 gr.
 
Well, I no longer have a 7.62 NATO chambered rifle, but I still have a couple of .308's. The SAMMI recommendations/warning is this, It is safe to shoot 7.62 Nato ammo in a rifle chambered for and marked for .308, they advise not to shoot .308 in a rifle chamber and marked 7.62 ( this was also posted in the American Rifleman ). Your gun, your decision, but it is not internet garbage. I've shot a lot of 7.62 in my .308's but not the reverse. I won't even go into the Spanish guns.
 
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