5.56 &223 question?

[BowCrazy]

Can you shoot 5.56 & 223 out of both barrels? is there a rule for this? If not what damage will it do?

I do know about the Wilde barrels but I already have some barrels to build on.

Thanks

[Rubi513]

To my knowledge you can’t shoot 5.56 out of barrels marked 223 because of pressures issues. You can shoot 223 out of both 5.56 and wylde barrels

[LWD]

Don't shoot 5.56 out of a .223 barrel. You can shoot either out of a 5.56 or .223 Wylde barrel.

[muzzlebrake]

Depends on the manufacturer of the rifle. CZ 597 rifles are made to shoot both. There are maybe a handful of others. I would think any bolt rifle that has the identical chamber dimensions of a 5.56 would be OK. The differences should be in the chamber throat. So if I had a .223 and reamed the throat +.125 longer it would be the same as a 5.56 and therefore should be OK.

[muzzlebrake]

I once had a Sako L461 Vixen in .223 and I shot a lot of 5.56 out of it. Never seemed to hurt the gun or accuracy. It was a long throat gun or the lands were shot out enough the 5.56 bullets never jammed them. I never measured the chamber so who knows.

[Bard]

The 556 has pressures up to 10.000 psi higher than a 223, the 223 mabufacturer will usually state whether the 556 is acceptable or not. I would think that most modern firearms would be fine but that is why there are lawyers.