Headspace opinion needed

[seez52]

This is my first, I've read all the procedures and have my pins and Forester gages. Cleaned everything well.

using a .264 pin I get what feels to me like a good lock up. some pressure is required, but it snaps into battery. .262 is really loosey goosey, no pressure required. I only have every other pin.

Using the +.001 for setback and then -.002 gets me to a .263 LS. Well, my kit had a .264 in it. I figure why not so I put it in.

It won't close no on the go gage with the LS installed. I'm thinking it should, but there there's that .001 setback, will that make a difference?

Using a couple of different surplus rounds, one goes in with about the same amount of pressure as the go gage did with the .264 pin. A second round from a different maker will close but requires a bit more pressure.

So what do you think? Maybe I'm about .001 or .002 tight?

Does tight mean better accuracy, or just that it will feed unreliably?

[broncobisley1]

What surplus are you using.

If it was me, I'd shoot it, but would only load 1 one at a time in the magazine for the first 10 rounds fired. Make sure the bolt closes fully on each round. After the first 10 try 2 rounds in the magazine. After 80 rounds the setback should be taken care of.

I've built a couple this tight and had no problems after getting 20-40 rounds down the barrel. It also depends on what surplus you are shooting as the headspace differs slightly on each. They've been accurate and I sure like them tight. :smile:

[seez52]

some of it is Venezualen 92, most of it I don't know. It's marked TZ 80 on the headstamp.

I'm thinking I may need to go down one size. But will probably try it like it is and see what happens, loading and shooting as you suggest.

[richbug]

Myself... I'd put a .262" in it and know it would run reliably on anything. Setback may or may not happen. The ammo you are using isn't noted for being the worlds finest.

[seez52]

I'm leaning that way. I think if I would have had a .263 gage pin in my assortment I would have used it. If so, that would put me .002 less than the LS I've used.

The go gage should close with the LS in place, it dosen't now.

[JAB75]

FWIW

I use Forester gauges and set headspace with 1 thumb pressure closure on the go.

It is a bit tight, but again...who doesn't like em tight? I have never had any problems with Port, Aussie, SA, Hirt, Winchester WB, Silver Bear, Wolf, Privi or Remington UMC.

With the .264 LS, try closing the stripped bolt/carrier on the GO gauge with recoil spring pressure. If it closes, you would probably be GTG for most ammo out there. You would really only run into a problem with lesser quality overlength ammo.

Or, just pop in a .262 and let the party happen.

HTH

-JAB75

[davedude]

It's marked TZ 80 on the headstamp.

Dude! Thats defective ammo! Kaboom stuff! Do not use!

http://www.falfiles.com/forums/showthread.php?s=&threadid=232500&highlight=tz80


Dave Dude

[seez52]

hum, it looks good. Looks just like the photos others have which has been classified as not good.

maybe I should pull it down

thanks for the heads up