Saturday, April 10, 2010

Reanimating a HW80K, Part 3

On I go...

Checking the barrel with a straight edge. My friend Jim had visted earlier and looking at the rifle felt the barrel was belt to the side. I saw this as well...

It does seem as though it's bent. But that shouldn't necessarily cause an accuracy problem?

Playing around I was pulling in the barrel. At the juncture of the top of the barrel with the breech block I saw a thin line.

And when I pulled up on the barrel a line of grease appeared (hard to see). This is odd and while I'm certainly not an expert as far as I know the barrel should not be loose in the breech block.

Only one thing to do...I pressed out the well hidden pin that locks the barrel in the block.

It's countersunk.

But the flared over end straightened out.

Pressing out the barrel.

It was straight knurled.

The grease I wiped off of the knurled portion.

And the grease I wiped out of the breech block.

So at the end near the muzzle end of the breech block it is .6279" dia.

In the middle .6332"

At the breech end .6342"

The hole is tapered from .632" at the breech end...

...to .636" at the muzzle end. So the hole is too big and tapered and the barrel too small and tapered. Thus it was only really anchored by the breech end. This would certainly cause some trouble with accuracy?
I can only guess as to why the barrel is in this condition.

Obviously there's more to come...

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