I got a Squib

[Letitrip]

I built a 9 mm carbine and it?s a super fun gun to use. Last time I took it to the desert it ran flawless about 3-4 hundred rounds. This time however, I got a freaking squib! After I cleared it, it ran fine another 250 rounds. The shell looked broken towards the rear. Anyone have any idea why this happened?

[Sir Toast]

Pictures?

[Mayor McRifle]

Were you using a fast powder? Depending on the type of bullet you’re using, you might be better off with a slower powder to make sure the bullet makes it out of the longer barrel. Here’s a good video on reloading for PCC:

https://youtu.be/7Q0NwE8bh_0

[Letitrip]

Thanks for the link. I purchased some ammo that was on sale.

[K001]

Delete

[Letitrip]

Why the delete comment?

[K001]

Why the delete comment?

I was going to mention reloads but saw the post above mine mentioned cheap factory Ammo

[Letitrip]

I had a picture of the shell but posting is not easy. If anyone wants to host it, let me know.

[pacrat]

I built a 9 mm carbine and it?s a super fun gun to use. Last time I took it to the desert it ran flawless about 3-4 hundred rounds. This time however, I got a freaking squib! After I cleared it, it ran fine another 250 rounds. The shell looked broken towards the rear. Anyone have any idea why this happened?

I have an idea. Squib and case head failure are related. Case head blew, venting enough pressure back into breech. Leaving Not enough pressure moving forward to force bullet out muzzle. ESPECIALLY with a small capacity pistol cartridge with an extended barrel.

Sounds like just plain ole CRAP HAPPENS Dude. Murphy loves us shooters.

[SonofWWIIDI]

One time, with factory ammo (not reloads) and no other prior issues? Not too worried.

[Letitrip]

Yes, the shell had a crack towards the primer area. I?m going to write it off as bad factory ammo.

Anyway, it was easy to clear. Dropped mag, locked bolt back, removed spent shell using a pocket knife, ran a rod down the barrel and out came the spent bullet. This was the first time I ever had this. It ran fine afterwards using the same factory ammo.