[Test_User]

Ok lets work thru this as it takes a tremendous amount of pressure to blow apart a STAG. You said you were firing a at a fast rate of fire correct? So you didn't have a failure to feed or eject and manual chambered another round and then it blew correct?

A load hot enough to blow frag a non-defective barrel extension is normally in excess of 100 PSI.

Normally stuff like this is from a squib load and chambering another round and setting it off whihc creates about 120-150K PSI and hopefully the case or bolt is all that blows.

How many rounds do you have thru this gun, barrel, bolt?

How much of this current lot of ammo have you shoot?

Anyone else have some of the same lot of ammo you know you can check with?

Where were spent cases ejecting at before this happened?

Do you have any of the spent cases from this range session? How do thy look? Any pictures you can post of them along with the gun?

It happens so fast you don't have time to be scared until after the fact when you are counting digits and looking for a mirror to see if you have any frags in you face or parts of it missing. :wink:


I am glad you contacted STAG and they are taking are of it make sure to contact SB as well. If the ammo was OK then there almost had to be a really big issue with STAG and it sounds like it was metallurgical. Defective barrel extension ?

 

[Test_User]

Tim, what would ejection pattern have to say about a KB?

Pressure. If the rounds were super hot then the timing would be advanced and th ejection pattern would move from say a normal of 4 O'clock to say 1 O'clock.

Based on no squib load, the description of the cases, and a super low round count, I would say almost positively a defective part of the STAG upper. Probably something with the barrel extension based on the damage you stated.

 

[Test_User]

Just picturing you wearing a motorcycle helmet with full body armor on while training thru a tactical shooting course. :lol: :lol: :lol: :lol: :lol: :lol:

 

[Test_User]

When you consider you can easily load a round that doesn't cycle the gun yet is still doing over 1200 FPS the chance is 0 that a round that would cycle the gun would still be in the bore. It is also very very doubtful you could pack enough powder into that load to cause this to happen with jsut one round rememeber all his other cases looked fine. Also if it was a hue headspace issue the cases would have shown it. The only answer I can see possible is a defect in the barrel extension or the barrel or something in that area but it had to bee a defect. Rememeber a few years back the bad SAKO barrels that banana peeled back from normal loads. Metallurgical issue. Considering we get most of our steel from china and th quality is spotty at best. The fact this happened in the first100 rounds as well is jsut screaming defect. Maybe a stress crack that let loose finally.

 

[Test_User]

Most gun kaboomies are ammo related that I have seen. And thats quite a few.

Man remind me not to shoot with the guys you are around. :lol: :lol: :lol:

The only Kabooms I have ever seen that were not videos but in person were destruction tests done intensionally and had use behind thick concrete walls with remote trigger systems and gun mounting fixtures. Similar to proof house setups.

 

[Test_User]

Are those posts from Tactical Forums? Wondering because of the screenname Frogman. If he is one in the same individual I know then I would listen for sure.