Scary incident at the range

[ARlife4me]

I had a local youngster bring me a 6.8 SPC AR night hog hunting rifle with thermal scope.
He said its hanging up after firing and won't cycle the next round. Failure to feed.
When he arrived and handed me the rifle and mag... I took a quick look and asked if this was the exact mag and ammo that was giving trouble. He said, yes sir.
I handed it back to him and said... Here is your problem...5.56 ammo was loaded in the mag in the dark of night and run thru the 6.8 rifle.
Dangerous situation.

A smaller caliber shot in a larger caliber is more forgiving. I state this as I once fired a 357sig round in a 40s&w. The recoil felt weird, but no harm was done. It cannot over pressure due to having a larger bore to pass extra pressure by. Having 6.5gren, 6.8spc, 5.56nato and 300bo in AR-15 so I can check for all misshap in cartridge interchange by bolt closure. I'll remove firing pin before testing. It all comes down to AWARENESS! Be safe! Glad I wasn't worse!

 

[xsn10s]

I've seen this twice where a guy (same guy) accidentally loaded a 5.56 with 300 Blackout ammo. That would explain the 120 grain bullet. Do you have 300 Blackout ammo also?

Wow that's a new one for me.

 

[Pdvdh]

From where did you recover that bullet?
Lodged in your barrel?

 

[jmquarles]

From where did you revover that bullet?
Lodged in your barrel?

Yes it was

 

[xsn10s]

Yes it was

Well thanks for sharing. Sorry about you rifle, glad you weren't hurt.You sharing this might save someone from injury or worse.

 

[jmquarles]

Well thanks for sharing. Sorry about you rifle, glad you weren't hurt.You sharing this might save someone from injury or worse.

Appreciate everyone's input on this. Lesson learned.

 

[2buffalo]

.300 Blk will chamber & fire in a .223 Rem/5.56mm gun. And it will take that .30 cal bullet that weighs 120gr right on down to .224 diameter. Mystery solved. Next comes the denials & that's not possible but the proof is in the weight & length of that projectile shown.

 

[2buffalo]

It was the first thing the company I bought my parts from for my 300 blk out warned me about. Other wise I wouldn't have known either.

 

[asd9055]

Thank you for the picture. I thought the 300 was a necked up 5.56. Evidently not. The 300 being a shorter case will chamber. Learn something every day.
Tom

It is a shortened and necked up 223/556

 

[TENHunter]

Could have been much worse... Glad you're ok

 

[MachV]

I'm the only one to load mags, black 30 rounders for 223, tan 20 rounders for 300bo and the magwells are color coded. Id like to try the ARC but aint going through the hassels of keeping it seperate from the Grendel. The 450 bushmaster doesnt seam to be a problem

 

[TheLongRanger83702]

Was shooting AR yesterday. About 10 or 11th shot the rifle blew up. I was shooting factory rounds from a reputable manufacturer (bulk box of 1000). At the shot I felt powder hit my face. The bottom was blown out of the magazine and several rounds in the mag were dented/deformed. Bottom of bolt carrier was mangled. Got home and got the bolt back and this is what is left of the case and the projectile that came out has me dumbfounded. Take a look at pics and tell me your thought please. View attachment 368915View attachment 368914View attachment 368913View attachment 368916

Regarding that bullet it would appear that SIZE DOES MATTER!

 

[Dr.Rx]

How many of these boxes are out there?
**** boyz.. factory recall ASAP

 

[2buffalo]

How many of these boxes are out there?
**** boyz.. factory recall ASAP

Why?