PDA

View Full Version : 762x51 in a Remington 700


weber_2
04-22-2012, 4:28 PM
Can I run ammo this thru my Remy even though its a 308?

Plisk
04-22-2012, 4:33 PM
Yes you can.

If you know your .223 vs. 5.56 comparison. .308 is 5.56 and 7.62 is .223.

You're fine.

weber_2
04-22-2012, 4:35 PM
^so its opposite? So basically I could run either in the Remy
What about 308 in a M1A?

reidnez
04-22-2012, 4:49 PM
Short answer: shooting 7.62 in a .308 rifle, you're fine.

Long answer: There are some differences, but they're more of a concern for people shooting commercial .308 ammo in rifles chambered for 7.62 NATO, particularly if you want to reload. In a nutshell, the chamber is longer on milsurp rifles and you can end up with stretched brass or, worst case scenario, MAYBE a ruptured case (mainly with reloads). This is because while external dimensions are identical, .308 case walls are thinner than 7.62 NATO case walls. The military likes looser chambers to improve reliability, especially when fouled--think M240, not M40. Their cartridges use thicker case walls to allow for stretching without risk of rupture. They don't care about brass stretching because they don't generally reload. So, as for your M1A, if it is indeed chambered for 7.62 with a milspec chamber, you *could* have an issue firing .308. But again, it's mainly a concern for reloading. If you intend to reload for it, stick to 7.62 brass.

Shooting milsurp 7.62 in a commercial rifle chambered for .308 is totally fine, to the best of my knowledge. Here's the whole skinny, if you're interested:

http://www.303british.com/id36.html

Plisk
04-22-2012, 9:09 PM
^so its opposite? So basically I could run either in the Remy
What about 308 in a M1A?

Yes.

In new M1As (specifically Springfield) I believe their chambers are .308 and not 7.62. It depends on what chamber is in the barrel. M1As build with surplus M14 barrels with legit 7.62 chambers are not safe with .308 in most cases. Look in the manual for the weapon and see if it tells you, if not confirm with manufacturer.