6mmBR Checking Headspacing?

J

jimfinn

Guest
I am getting a barrel that is already chambered in 6mmBR and is threaded for for a Remington action. I am putting a trued Model Seven action on the barrel and the chances that the headspace will be correct is probably very very small.

To get the headspace correct, can I use the type of Clymers Go and No-Go gages that Brownells sells? Or would I need to get with the gunsmith who chambered first to find out how he chambered it? That very maybe a dumb question, but I'm too dumb to know whether it is or not:confused:

Someone said I could just use a case that was fire-formed in that chamber, which the person selling the barrel is sending to me. But that just would just let me figure out whether the bolt will close or not.
Thanks
Jim
 
Yes Jim, get a hold of the smith that chambered the barrel and ask if the reamer he used was a custom spec reamer or a stock item. Ask him if he will fax you a copy of the print or give you the reamer makers contact information for the print and the gage information if it is a custom. The reamer grinder will have the gage you need or the print to work from for your gaging.


There is another way to get around this with a chamber cast and measuring tools. However you still need the gages. If you like the way this barrel and chamber are working (when it warms up) it's best to get the tooling for that chamber and all the rest of tooling that goes with it. This will mean that your custom dies will not need any changes and will over all lowr your costs.

Remember when cutting a new chamber, only the go-gage is needed.

How about this Chinook, Jim?
 
Jim,
I would buy a go guage only. If you can close a stripped bolt with it installed and won't close with a piece of scotch tape on the back of the headspace guage, you are ready to go. That being said, if it is close, you can fireform new brass to fit and will be fine if you properly size your brass each time.
Butch
 
Three wonderful days of Chinook winds with temperatures in the +40's. This weather reminds me of the time I had close to a thousand pounds of cut and wrapped game meat out on the porch and it went from -50 to plus 50 in about 48 hours. I was scrambling around looking for meat locker space.

Yes Butch, it has been three of Al Gore's global warming days.;)
 
When we lived in Anchorage, we had a similar thing happen in 1979 I believe. The winds took out a bunch of transformers and we were without electricity for several days.
Butch
 
Thanks for the advice Guys,
Yep this weather is the a real bummer. Once it is Winter (mid-October in Soutncentral AK) it has no business getting above freezing until about mid- or late March, in my opinion. Not that I want -20 or lower, but 15 to 25 degrees above is about right.
Al,
I live 7 miles up the South Fork valley off of Hiland Rd. I didn't even drive out yesterday and even this morning there were spots where it was a skating rink:eek:.
Jim
 
Jim, it is really tough trying to explain surface conditions to folks that have no idea of what it's like. Try telling someone that it's like pouring oil on glass and try driving and walking on it.

The report for the first day of this weather was a hundred cars in the ditch between the valley and Anchorage. Tow trucks and body shop weather.:mad:
 
I bought an old International Scout when I got there. The only time that I had a real problem was in the parking lot of the apartments that we lived in at the time. The parking lot was frozen and it rained and froze on top. I said no problem, jumped in the Scout and with 4WD just spun my tires. Acouple guys helped me and we slid it to the street and drove off. I also found out that big wide tires on your trucks weren't the ticket either on the ice.
Butch
 
Good news Butch. no need to go to Alaska for that experience. Just come to Indiana. Global warming?? Sounds like another way to say "Shopping for a grant".

Mike Swartz
 
Butch Lambert said:
I bought an old International Scout when I got there. The only time that I had a real problem was in the parking lot of the apartments that we lived in at the time. The parking lot was frozen and it rained and froze on top. I said no problem, jumped in the Scout and with 4WD just spun my tires. Acouple guys helped me and we slid it to the street and drove off. I also found out that big wide tires on your trucks weren't the ticket either on the ice.
Butch
Click to expand...


Before Al Gore invented Global Warming (about the same time he invented the Internet) We used Clorox straight from the bottle to break the ice lock on the tires and move from where you were froze in at. I don't know if that is PC anymore, but it works.
 
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