What in the world?!

[y.old.ndn]

Today I cracked out the old 22 just for fun. On the first round it went "putt" and smoke came from every where around the action and I felt sandy stuff hit under my eye! So I went inside got a cleaning rod and pushed out both bullet and case!
What is at fault the ammo (old , I do not know what kind) ,Or the marlin mod 60?

 

[InkEd]

Based on the picture of the ruptured case I'd say the ammo.

 

[-eaux-]

i don't know, the shape of the case failure suggests to me the action didn't go fully into battery...

 

[Bobarino]

eaux wins. fired when not fully in battery. give it a good cleaning and lube job. glad you're ok.

Bobby

 

[happygeek]

I've had that happen with my wife's Rock River LAR-15 in 22LR, except that the round fired. The shell casing did just that though; instead of ejecting the base of the casing blew out and stuck it to the bolt face. I chalk it up to my using cheap 22LR ammo.

 

[fireman 9731]

the shape of the case failure suggests to me the action didn't go fully into battery.

Ditto

 

[Oyeboten]

Ditto...unsupported Case...fired somehow, while not being fully in the Chamber.

 

[kanook]

what letter is stamped on the bottom of the casing

 

[eight433]

Yup, been there before... with the same gun too. Glad it was only a .22!
Mine was caused mostly by old/cheap ammo and a dirty action. I tore it straight down to itty bitty parts and replaced the buffer, scrubbed everything down, and put it back together with a light coat of oil and shes back to a sweet shooter again.

 

[gyvel]

what letter is stamped on the bottom of the casing

I'd lay odds it was an "F"

 

[y.old.ndn]

It said "H" on the bottom