Strange primer strikes.

[SuperCub]

I found these light primer strikes on ammo that was cycled through my BRNO ZH-204 a few times while hunting this fall. The lower left three are the ones in question. None other went through the rifle.

Any thoughts/explanations/theories?

 

[SuperCub]

Can't get photobucket to work tonight.

 

[Stevebot-7]

Going to the photobucket url, it tells me the image has been moved or deleted. Did the file upload, or was it just being previewed?

The only image with primers visible on your album is this one,

Is this the picture in question? Those primers don't look touched at all.

Nice ribs.

 

[BigUglyMan]

Clean your rifle. Or sell it. Or something. Forget your light primer strikes.

But what is THAT thing?

 

[gunrunner100]

Paul:
Were any of those rounds in the rifle when the other barrel went off? Do the firing pins "float" or do they have rebound springs?

 

[c-fbmi]

Did you by chance let the hammers down for safety reasons, with a cartridge in the chamber, Paul?

 

[SuperCub]

Clean your rifle. Or sell it. Or something. Forget your light primer strikes.

But what is THAT thing?

Sadly, not mine. A fellow in the States sent me those pics to upload onto 24HR.

 

[SuperCub]

Paul:
Were any of those rounds in the rifle when the other barrel went off?

Nope.

Do the firing pins "float" or do they have rebound springs?

Not sure how they work, but I did wonder about the pin moving forward when the bbls are snapped shut.

 

[SuperCub]

Did you by chance let the hammers down for safety reasons, with a cartridge in the chamber, Paul?

No hammers here. That 303 SxS wasn't mine, but I wish.

 

[Baribal]

First tell him to check for burr around the firing pin hole(s). Then check if the firing pins are retracting far enough into the receiver....

 

[Mush]

I would bring that rifle to a competent gunsmith asap. Something's wrong. Could be dangerous.
I don't remember where I have read a thread, but the guy had trouble like this.

I think that it was about a big bore caliber used for white bear defense up north. IIRC the gun blowup.

Maybe you could do search. In the forum.

Mush

 

[Lodi]

Any thoughts/explanations/theories?

If they were just cycled through the action, then I doubt they are caused by the FP.

~ Debris of some kind, check the mag box and bolt face.
~ Reloads, check the press for debris.

 

[H4831]

Can't get photobucket to work tonight.

Welcome to the club!

 

[sunray]

The rifle go bang when you wanted it to? If so, busted fp's is out. That'd be really good.

 

[BigUglyMan]

No hammers here. That 303 SxS wasn't mine, but I wish.

You, me and probably several other people.

 

[SuperCub]

If they were just cycled through the action, then I doubt they are caused by the FP.

~ Debris of some kind, check the mag box and bolt face.
~ Reloads, check the press for debris.

The BRNO 204 is a break action. 7x57R over 12ga.

 

[kamlooky]

Are you 100% sure the marks came after they were loaded?
These reloads?
Did you have a moment where the primer tool handle was pushed
a tad further than you usually sqweeze?
Didja drop a box of ammo they were in?
How about the thought that you shot the bottom barrel and the kerpow
cause the firing pin up top to kiss the primer?

Trade it to Joe Joe, at least this one has a wee bit of a lever on it.

 

[Boomer]

I can't remember if the Brno O/U has a bushed firing pin, but I don't think it does. Examine the face of the receiver to see if there is a small burr around the firing pin recess .

 

[norskie]

First tell him to check for burr around the firing pin hole(s). Then check if the firing pins are retracting far enough into the receiver....

This is what I would look for

 

[SuperCub]

Here's a pic of the breech face. Top one fires rifle bbl.