9mm case head blowout

[someguy2800]

I think the reason it was so uneventful in my case was because I do load 9mm to rather low pressure. I have not had an issue or bulging with any factory ammo, but if this had been a really hot plus p defensive load that ruptured like that I could see bad things happening like the grips being blown off.

 

[243winxb]

I felt a bunch of particles hit my face

it was so uneventful

This event would get my full attention & i would take the necessary steps to avoid it in the future. But thats just me.
Good luck. Be safe.

 

[bfoosh006]

Older brass and minimal case support, would be my guess. ( no offense, about the case support comment )
How old is the recoil spring ?
Is it possible the case started extracting and lessened the barrel support from a "weaker / old" recoil spring ?

Just thinking out loud.

 

[ATLDave]

Older brass and minimal case support, would be my guess. ( no offense, about the case support comment )
How old is the recoil spring ?
Is it possible the case started extracting and lessened the barrel support from a "weaker / old" recoil spring ?

Just thinking out loud.

A recoil spring isn't what holds the action closed in a locked-breach/tilting-barrel pistol during the actual firing period. Many people have fired 1911's with NO recoil springs to prove this. The recoil spring closes the slide during the feeding portion of the cycle, and (modestly) slows the impact of the slide at the end of the stroke.

 

[Jim Watson]

Tired brass in a wallowed out chamber. Maybe bullet setback boosting pressure.

Ever look at an original .38 Super barrel? The barrel ramp is short and narrow, meant for roundnose bullets at high pressure ever since 1931. The OP's barrel looks like it was hit with the same cutter used to "throat" a .45 for semiwadcutters. A vendor sent a racegunner here a barrel like that. Predictably, it blew cases with .38 Super Major as his traditional barrels did not.

 

[Shimitup]

A recoil spring isn't what holds the action closed in a locked-breach/tilting-barrel pistol during the actual firing period. Many people have fired 1911's with NO recoil springs to prove this. The recoil spring closes the slide during the feeding portion of the cycle, and modestly slows the impact of the slide at the end of the stroke.

A little visual of what ATLdave explained. The bullet is long gone and pressures dropped before the lugs unlock.

 

[ATLDave]

A little visual of what ATLdave explained. The bullet is long gone and pressures dropped before the lugs unlock.

Yep. That's the point of those funny lug or barrel hood dealies on top of barrels on 1911's and Glocks and Sigs and everything else with a tilting-barrel system!!! If the recoil spring held things closed, you wouldn't need those. And you'd have a blowback design.

 

[9mmepiphany]

I've always been amused by the looks on people's faces when shown that you can hold the slide closed on a 1911 with thumb pressure

 

[Jim Watson]

And "out of battery" is hard to figure in a Browning tilt lock when the firing pin indent is centered. If there is anything left of the primer after a gross overload.