Adventures with with breeching washers

[muffett.2008]

Did you take the opertunity to check that chamber again with the barrel out?

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[boatbod]

Did you take the opertunity to check that chamber again with the barrel out?

I looked at it with a loupe and flashlight, but to be honest it's hard to see anything specific because that only focuses at a fairly shallow depth. Where the barrel was originally short chambered it was apparently done very coarsely. If I ever see one like that again, I'd use a full finish reamer to smooth it up before setting headspace with the pull-through (which only cuts at the shoulder).

[arado]

Been there, done that for my FAL projects. Made possible by my Harbor Freight $350 lathe. Avoided buying a bunch of factory washers. made the washer to precise specification. better than issue. Timing perfect. Torque by feel. gary

[boatbod]

Gary, what sequence of operations did you use when making your washers?

Like I mentioned above, I turned the OD, bored the ID and then parted off at the desired thickness. Never would have thought about another method were it not for a youtube video showing someone turning, grooving and then boring. I can see how that way might give you a more controllable thickness, but at the expense of less accurate ID if the part separates before you're ready.

[arado]

As you. turned OD, bored ID. I had access to a surface grinder to reach the needed thickness for each build. That access is gone. Now it is a file. gary

[boatbod]

As you. turned OD, bored ID. I had access to a surface grinder to reach the needed thickness for each build. That access is gone. Now it is a file. gary

How do you fixture something as thin as a washer so you can surface grind it?

[arado]

How do you fixture something as thin as a washer so you can surface grind it?

I used a rare earth magnet and my hand. It was not a production run.Grind and measure.