What Happens If You Try and Shoot 300 Blackout in a 223?

[Colorado Osprey]

"I saw this posted up on ‘the Reloading Room’ on FB today ...

this is the results of firing 300blk through a 5.56 barrel; that's a projectile stretched in the center section; the shooter was unharmed, the magazine blew out of the gun, and gun was damaged."
https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-ash3/t1/1888463_722080771165737_992998620_n.jpg

linked from:
http://www.oa2.org/Forum/viewtopic.php?f=67&t=15120

[hghclsswhitetrsh]

Wow had that not been a heavy barrel I think the shooter would've been severely injured...

[MarkCO]

Actually, it does not matter what barrel. The design of the AR15 makes it VERY hard to rupture a barrel. The blow-out type cases like described in this one typically occur with subs, like a blown Glock. With a supersonic, blown out receiver, bolt and carrier. This has happened more than a dozen times that I know of.

[drift_g35]

Dont know if anyone saw this article, but it is basically the same thing.


http://www.thefirearmblog.com/blog/2013/12/18/300blk-fired-5-56-fs2000/