savage 110 scout rifle 223 rem

[jackrylar]

really need accurate info as to using 5.56 barrel is stamped 223 a friend at the range has same rifle and claims it can shoot either its a beefy gun and hehas had no issues just would like to know i keep getting different answers thankyou jon

[Dave Hoback]

Yes, it’s fine. They are the same thing. Just pay attention to any ammunition you use & look for signs of overpressure. Like the bolt very hard on primary extraction, a case stuck in the chamber, flattened primers, etc. If you find ammunition you’ve used exhibits any overpressure signs, cease using said ammunition.

[Mark611]

JMO, I know some rifles are chambered to handle both the 223rem and the 5.56mm, but as a rule of thumb I would call Savage and ask them that question! some 223rem barrels are not designed to handle the pressures of the 5.56 cartridge, that's why it's marked 223rem just my thought's!

[CFJunkie]

The 7,300 psi Pmax pressure of the .223 SAAMI spec (56,000) and 5.56x45 NATO spec (62,366) is well within the pressure limits of modern barrels. There is a .223 Remington pressure spec that is identical to the 5.56x45 spec. If your barrel is marked .223 Rem you probably aren't looking at any difference.
Ask Savage and I think you will find that it may even have a Wylde chamber which is bored to accommodate either cartridge length.

[Dave Hoback]

Exactly.

[charlie b]

Here is the SAAMI answer.

It is safe to shoot 223 Remington ammunition in a 5.56 military specification chamber. The firearm manufacturer can verify whether the chamber in your firearm meets that definition.
However, due to the sizeable number of “wildcat” or non-military specification 5.56 chamber geometries in existence, SAAMI recommends that you consult the firearm owner’s manual or contact the firearm manufacturer for further guidance as to whether your firearm can safely shoot 223 Remington ammunition.
However, it is not safe to shoot “5.56,” “5.56 NATO,” or “5.56x45mm” ammunition in a barrel marked as being chambered in 223 Remington for a number of reasons. The main reason being that a barrel marked as chambered in 223 Remington will have a shorter throat into the rifling than a “5.56” barrel which may cause increased pressure if the “5.56” ammunition is fired in it. This can result in serious injury or death to the user and/or bystanders, as well as damage to the firearm
.
--------------
Savage used to have a legal statement that you should not fire ANY surplus ammo in your gun unless it is marked for that ammunition. That would include 5.56, 7.62x51, and .30 Ball. They adhere to SAAMI specs and for legal reasons won't stray from that.

BUT...realistically it works. As noted above the pressure difference isn't that great. My experience with the .223 Axis is that the throat is longer than even the 5.56 spec. By the time I seated a bullet to touch the lands it would not fit in the magazine.

Where you might run into a problem is if you have a rifle made a few decades ago with the SAAMI spec throat.