My old Remington 512....????

[Topgun]

This is my old 512 that I got 54 years ago. It began having feed problems several years ago and I just lived with it as I have many other guns, but it got worse.
Finally took to ...gunsmith....who corrected (?) the feed problem but now it is EXTREMELY hard to close bolt. I...mentioned .... it to him, but then remembered how hard it was to even get it back. Delays, delays, delays.

So.....Do these pix give anyone a clue? What could be binding the bolt and will it "wear in" or should it be (really) repaired?

The bolt is even harder to close with safety ON and it used to make no difference when ON or OFF. I use safety ON to jack live rounds out.

Here are the pix:

That's where it hangs up.

A look inside

reference photo

A dent in the stock. Is this how they limit the carrier travel?

Does position of spring look right?

Only reason I am working on this old thing is because it is a good shooter and it was my first gun and we're "attached."

 

[Jim K]

I have a 511, and it has been a long time since I worked on a 512, but I am going to take a stab at one possible idea. That receiver was made by heating a slab of steel red hot, bending it around a mandrel and forging to shape. There are several screws that go through the receiver. At the factory, those are tensioned right and then staked. If your gunsmith tightened them down too tight, the sides of the receiver can bend in enough to bind and tie things up. Just a WAG, but let me know if that does turn out to be the problem.

Jim

 

[Topgun]

Nope Jim, that wasn't the problem. Took it out again today. Bolt was free as a bird OUT of the stock.
So that left an ....internal.... problem.
Think I found it. Put some grease on the sear. smoother...

Put MORE grease on and worked that bolt a jillion times. Think it's fixed. Don't have any idea what he may have tinkered with. But lubing the sear AND the plunger that detents the carrier seems to have done it.

It still intermittently jams but not TOO bad.

I know I won't take it back to HIM! He gave me the sob story that since the neighbors rented the space next door, he couldn't use his bullet trap anymore.

Sez he just works at 1 AM now ...WHEN he can get to the shop at that hour. NOT where I want to depend on it.

Can't COUNT the excuses for the delay. I wudda suggested MOVING but why start an argument? heh heh

Soooo.....I guess I'm lucky to have it SOMEWHAT working for only $35 plus several places where he gouged up the stock.