Guess what happened here.


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Thompsoncustom
January 1, 2013, 08:27 PM
Like the title says you have to guess what happened the win, be very specific.

http://i117.photobucket.com/albums/o77/danielthompson8588/Picture2042_zpse075c3a6.jpg
http://i117.photobucket.com/albums/o77/danielthompson8588/Picture2039_zps4f06a6af.jpg

2 pieces of brass just different views.

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SharpsDressedMan
January 1, 2013, 08:30 PM
Casing used as a projectile rather than a casing?

wow6599
January 1, 2013, 08:34 PM
You dropped it in the garbage disposal :D

Thompsoncustom
January 1, 2013, 08:38 PM
lol no both were fired from the same gun.

JVaughn
January 1, 2013, 08:40 PM
Something loose in the action allowing the bolt to slide back before the bullet clears the muzzle, allowing gas expansion to occur inside the brass.

klyph
January 1, 2013, 08:44 PM
It looks as though they were fired completely out of battery. Or they were the two rounds directly beneath a round that fired partially out of battery. There doesn't appear to have been any chamber support whatsoever. Perhaps they were loaded as shot in a 12 gauge?

Thompsoncustom
January 1, 2013, 08:45 PM
Something loose in the action allowing the bolt to slide back before the bullet clears the muzzle, allowing gas expansion to occur inside the brass.

good guess and Ive seen that before but thats not what happened here

JVaughn
January 1, 2013, 08:46 PM
OK then, ammunition caliber didn't match the weapon?

klyph
January 1, 2013, 08:47 PM
Perhaps an open bolt firearm had a case lodged in the chamber and these rounds were subsequently ignited out of battery. Maybe you used them as reactive targets?

osteodoc08
January 1, 2013, 08:57 PM
If both were fired from the same gun, either it malfunctioned seriously twice or this was the intended consequence. It looks crushed front to back so unlikely completely chambered when it happened. Was it a target that was shot with something else?

Can we see a shot of the Primer area? Caliber?

Thompsoncustom
January 1, 2013, 09:14 PM
It looks as though they were fired completely out of battery. Or they were the two rounds directly beneath a round that fired partially out of battery. There doesn't appear to have been any chamber support whatsoever. Perhaps they were loaded as shot in a 12 gauge?

WINNER:Klyph

Both are 9mm rounds and reloads tho pressure wasn't the problem. Klyph got it right as both rounds were fired completely out of battery. I was playing around with lighten springs so that was most likely the cause but the firing pin was also bent and stuck out so not 100% sure. The rounds jammed with the nose in the chamber and when the slide tired to close it set them off lodging the round in the barrel and exploding the case.

berettaprofessor
January 1, 2013, 09:14 PM
You held them in a vise and struck the primer with a hammer and punch.

berettaprofessor
January 1, 2013, 09:15 PM
Oh, no, second guess; they exploded in a fire.

cyclopsshooter
January 1, 2013, 09:16 PM
Older 9mm AR15?

Rail Driver
January 1, 2013, 09:23 PM
fired out of battery causing a case blowout. Could likely have caused catastrophic failure of the firearm as well, and possibly injury to the shooter or bystanders.

Urban_Redneck
January 1, 2013, 09:26 PM
Cook offs in an overheated barrel.

What did I win?:)

Eureka40
January 1, 2013, 10:50 PM
Accidentally put them in the dryer with your Carhartts?

:neener::neener:

Skylerbone
January 2, 2013, 03:37 AM
Doesn't everyone's brass look like that?

PS: the OP disclosed the answer already. Would like to see the firearm in question.

Centurian22
January 2, 2013, 03:50 AM
How the heck did this occur twice?!?

Thompsoncustom
January 2, 2013, 06:28 AM
Firearm was a hi point c9 I do all my crazy reload testing and gunsmithing idea's on this gun because tho it's not 100% reliable it's a tank and I don't want to hurt any of my nice guns.

After the first explosion I looked down to see if my hand was still there and it was a little black but unharmed. So I disabled the gun and beat the lead round out of the barrel and took the hunk of brass out and looks over the gun and decided it was fine and did some more shooting untill it happened again than I pulled the springs and changed to a firing pin that wasn't bent and it works like a champ again. The Hi point it's self is fine and shows no signs that it ever even happened.

MaterDei
January 2, 2013, 08:34 AM
decided it was fine and did some more shooting
You decided to do more shooting without figuring out what caused the first kaboom? I'm not sure brave is the proper descriptive.

Thompsoncustom
January 2, 2013, 11:27 AM
lol maybe But I have confidence that you couldn't blow this gun up if you tired so I wasn't worried.

Centurian22
January 2, 2013, 02:34 PM
I agree about not blowing up the gun, as I've seen some crazy YouTube vids of shooting the hi point with a bolt screwed into the barrel for an obstruction. HOWEVER, it isn't the gun I'd be concerned with!!! I'm glad the second one was enough to convince you to look into it further.

klyph
January 2, 2013, 03:22 PM
The bent firing pin made this essentially a fixed firing pin firearm. I've always been curious how fixed pin open bolt firearms avoid firing out of battery. It seems like it would be common.

MaterDei
January 2, 2013, 03:30 PM
Ironic that the toughest gun around is one that is generally derided as a POS. I don't hold this opinion, but many do.

After the first explosion I looked down to see if my hand was still there and it was a little black but unharmed.

Can you expand on this? How sore was your hand? How black was it? Were you wearing gloves the second time? :)

WardenWolf
January 2, 2013, 03:36 PM
The bent firing pin made this essentially a fixed firing pin firearm. I've always been curious how fixed pin open bolt firearms avoid firing out of battery. It seems like it would be common.
Hard military primers, and feed ramps that ensure the bullet doesn't straighten out and place the primer in front of the firing pin until right at the end.

One way of doing it is to have the lower part of the bolt that strips the round from the magazine extend forward beyond the normal bolt face. When the round reaches the end of the feed ramp and straightens out, it slips off this guide, the firing pin slams it, and it fires.

Thompsoncustom
January 2, 2013, 03:46 PM
Can you expand on this? How sore was your hand? How black was it? Were you wearing gloves the second time?

Ya the top part of my index finger back to the lower knuckle on my thumb was black just from unburnt powder I would imagine and no I didn't put gloves on just held it differently.

Ya I replaced the spring and firing pin that day but it was just the firing pin causing the problem as I have a shorter firing pin and with those same springs there was no problems.

MaterDei
January 2, 2013, 03:52 PM
Cool, thanks.

Sorry for hijacking your thread.

DanTheFarmer
January 2, 2013, 04:09 PM
The only open bolt, fixed firing pin guns that I know about are Advanced Primer Ignition Blowback designs. The bolt is still moving forward when the fixed firing pin sets off the primer so the backward pressure first has to overcome the forward momentum of the bolt and then accelerate the bolt backward to cycle the firearm. In a sense these guns are never "in battery". Since they're blowback the bolt is never locked and since they are API all this stuff is happening on the fly. I'm no expert so please correct me if I'm wrong or provide other examples of an open bolt design functioning differently.

Jim K
January 2, 2013, 10:50 PM
The lighter spring had nothing to do with it. The Hi Point is a blowback pistol and is kept closed until pressure drops by the mass of the breechblock. The only function of the recoil spring is to return the slide to battery.

There is NO doubt that the gun fired out of battery and the cause was the stuck firing pin that fired the partially chambered round as the slide closed. The normal result will be a bulged and bent magazine and broken grips, not to mention a stinging or bloody hand if the pistol is being held normally.

Jim

chris in va
January 4, 2013, 12:08 AM
After the first explosion I looked down to see if my hand was still there and it was a little black but unharmed. So I disabled the gun and beat the lead round out of the barrel and took the hunk of brass out and looks over the gun and decided it was fine and did some more shooting untill it happened again than I pulled the springs and changed to a firing pin that wasn't bent and it works like a champ again. The Hi point it's self is fine and shows no signs that it ever even happened.

No offense, but please reconsider taking this course of experimentation before you do permanent damage to you or someone else. What you're doing is NOT safe.

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