5.56 round is basically the same thing as 223 right?

Answer 1

Basically, yes. Ruger announced some time ago, that any Ruger rifle chambered for 223 would handle the 5.56 ammo with no problem.

Answer 2

They are very similar, but the neck and shoulder are not the same. The best place I have found to learn the small differences is at TheGunZone.com. Writer Dean Speir has all of the technical information available on these 2 cartridges. According to the specifications, any rifle chambered for the 5.56 NATO should fire the .223, but not always the reverse.

Answer 3

The cartridge casings from these two rounds are basically the same as far as length and exterior dimentions are concerned. The 5.56 loaded to military specs usually have thicker case walls, and a thicker "head" for added strength.
(The heavier weight cartridge casing handles pressures better) On the DOWN side the heavier case reduces powder capacity.

The 5.56 and 223 Remington chambers are nearly identical.The difference is in the "Leade" dimentions (Leade is the barrel area directly in front of the firearm chamber where the rifling stops in order for the bullet to "seat" properly.) "Leade" in a 223 Remington chamber is .085, in the 5.56 mm the chamber measures .162, almost TWICE as much as the 223 Remington chamber.

You can fire .223 Remington cartridges in a 5.56mm gun chamber with the longer "leade",but you will lose a bit of accuracy and velocity over firing the .223 Remington in the shorter leade chamber it was designed for.In addition, you can also experience problems shooting higher pressure military 5.56mm cartridges in any firearm designed for the.223 Remington cartridge with it's much shorter leade.
Chamber pressures are much greater in these firearms with shorter leade too. This can result in blown cartridge cases heads,case seperation,primer pocket gas leaks, as well as expansion issues, affecting the over-all performance and function of the firearm.

90% of most 5.56mm ammunition available today is full metal jacketed. Performance bullets, hollow points,soft points,and ballistic bullets etc are loaded in 223 Remington Cartridge cases to begin with.

AGAIN...Firing a .223 remington cartridge in a 5.56mm firearm is PERFECTLY SAFE, and only will effect recoil and accuracy slightly.

IT IS NOT recommended that you shoot 5.56X45 NATO Military Ammunition in any firearm chambered for the .223 Remington cartridge with the shorter "Leade", or you can expect to have some issues as described earlier.......

Answer 4

Yes, 5.56 mm is what the diameter .223 is in Std. American measurements.

Answer 5

Not exactly. 5.56 is the military equivalent of the round and packs more powder. Someone asked the same question earlier and there was quite a bit of info on it.

EDIT** You don't want to fire 5.56 in a .223. The reverse is ok though.

Answer 6

The military spec for 5.56 is slightly different in many ways. The thickness of the case.
The tolerance of the dimensions.
The primer used
The crimp on the primer and bullet
The type of powder
The type of bullet
And as was said this has been answered before and if it is still posted you can read more in depth about these two cartridges

Answer 7

Basically yes but what you are mentioning are only terms of measurement of the sabot. .223 Cal. and 5.65mm is of coarse the same size sabot but the 5.65 catridge is referred to as the 5.65 NATO designed originally for combat. The rifle should chamber both ammunition types but the purpose of each is discreetly different. The .223 is a Varmint round it has a weaker tradgectory making it an effective prairie dog killer but a weak people killer the NATO cartridge obviously has a higher powder load and therefore has a higher muzzle velocity and flatter longer tradgectory. Both are fairly equally dangerous at 100 Yards.

Answer 8

heres the question asked before

Answer 9

Basically... yes it is..... you can put the round in any gun that fires that round and it will fire.