The Firing Line Forums - View Single Post - 7.62x54R Case rupture. Headspace issue or ammo?

tobnpr · March 2, 2012, 08:44 AM

I agree with all above.

But, I suggest you invest the twenty-five bucks in a no-go gauge as you already stated, especially if you plan on buying any more Mosin-Nagants.

Checking headspace is the safe way to do things with old milsurps with unknown history and unknown condition. Despite their usually stellar reputation for not having issues, one of two Mosins I recently bought failed a no-go gauge test- and it was a re-arsenaled rifle. I solved the problem by swapping out the bolthead with a bit "thicker" one...

Just my $.02...

March 2, 2012, 08:44 AM	#10
tobnpr Senior Member Join Date: August 1, 2010 Location: Tampa Bay Posts: 4,556	I agree with all above. But, I suggest you invest the twenty-five bucks in a no-go gauge as you already stated, especially if you plan on buying any more Mosin-Nagants. Checking headspace is the safe way to do things with old milsurps with unknown history and unknown condition. Despite their usually stellar reputation for not having issues, one of two Mosins I recently bought failed a no-go gauge test- and it was a re-arsenaled rifle. I solved the problem by swapping out the bolthead with a bit "thicker" one... Just my $.02...