THE ACCURATERELOADING.COM GUNSMITHING FORUM


Moderators: jeffeosso
Go
New
Find
Notify
Tools
Reply
  
headspace question
 Login/Join
 
One of Us
posted
i have a rem 700 action thats had .4 thou. taken off to square it up.i,m going to install a 8 mag. takeoff barrel.do you think i ,ll have any trouble getting it to headspace.
 
Posts: 315 | Registered: 16 March 2006Reply With Quote
One of Us
Picture of Concho42
posted Hide Post
You're joking right ? after taking off the .004 you lost head space !


Don't take the chip !
 
Posts: 578 | Location: PA | Registered: 21 March 2007Reply With Quote
One of Us
Picture of Masterifleman
posted Hide Post
I will get a lot of flack over this, I'm sure. The standard H&H belted case uses a "GO" gauge of .220" and the "NO-GO" is .224". If you headspace using the "NO-GO" gauge you have built in excessive headspace. I have always used the "GO" gauge as a no-go and have NEVER had a rifle fail to chamber any manufacturers new case with ease. I would try a "GO" gauge before reaming the chamber any deeper and definately try your brass (full-length re-sized) before you alter anything.


"I ask, sir, what is the Militia? It is the whole people. To disarm the people is the best and most effective way to enslave them" - George Mason, co-author of the Second Amendment during the Virginia convention to ratify the Constitution
 
Posts: 1699 | Location: San Antonio, TX | Registered: 14 April 2004Reply With Quote
One of Us
posted Hide Post
You won't know until you install the barrel and check the headspace.
Butch
 
Posts: 8964 | Location: Poetry, Texas | Registered: 28 November 2004Reply With Quote
One of Us
Picture of Concho42
posted Hide Post
well lets see ! If he started with a total of .004 on the Go gage he would be a Zero now ! but it's unlikely that there was .004 to start with ? so he is now at No Go ! which means pressures are extreme ! my question is who did this work in the first place ?


Don't take the chip !
 
Posts: 578 | Location: PA | Registered: 21 March 2007Reply With Quote
One of Us
posted Hide Post
I think he said that the receiver at one time was squared up and it took .004 to do it. He won't know anything until he installs the barrel and checks it. He did not say the 8mag was the barrel that came off of it. Also .004" shorter on headspace will not effectively increase pressure.
Butch
 
Posts: 8964 | Location: Poetry, Texas | Registered: 28 November 2004Reply With Quote
One of Us
Picture of Westpac
posted Hide Post
quote:
Originally posted by butchlambert:
Also .004" shorter on headspace will not effectively increase pressure.
Butch


Unless he was referring to closing the bolt. Big Grin


_______________________________________________________________________________
This is my rifle, there are many like it but this one is mine. My rifle is my best friend, it is my life.
 
Posts: 3171 | Location: SLC, Utah | Registered: 23 February 2007Reply With Quote
One of Us
posted Hide Post
quote:
Originally posted by Masterifleman:
I will get a lot of flack over this, I'm sure. The standard H&H belted case uses a "GO" gauge of .220" and the "NO-GO" is .224". If you headspace using the "NO-GO" gauge you have built in excessive headspace. I have always used the "GO" gauge as a no-go and have NEVER had a rifle fail to chamber any manufacturers new case with ease. I would try a "GO" gauge before reaming the chamber any deeper and definately try your brass (full-length re-sized) before you alter anything.



If you use the "Go" as a "No GO" what do you use for a "GO"
 
Posts: 2221 | Location: Tacoma, WA | Registered: 31 October 2003Reply With Quote
One of Us
posted Hide Post
bucthlambert, correct this is not the original barrel, sinch i don,t have excess to 8mag headspace ga. will any belted case ga. work.
 
Posts: 315 | Registered: 16 March 2006Reply With Quote
One of Us
Picture of Concho42
posted Hide Post
Go to Brownells montazuma Iowa web site they have charts online for head space gages , I believe all belted mags are the same but with all the new stuff out possibly they are not anymore ?


Don't take the chip !
 
Posts: 578 | Location: PA | Registered: 21 March 2007Reply With Quote
One of Us
Picture of Concho42
posted Hide Post
quote:
If you use the "Go" as a "No GO" what do you use for a "GO"


I only have go gages ! I have starret shim stock at hand , I have punched out .437 OD round spacers .001,.002,.003,.004, put oil on the face of your bolt and Add one of the above gently engage bolt into go gage in chamber when it don't close you know exactly what your measurement is for head space !


Don't take the chip !
 
Posts: 578 | Location: PA | Registered: 21 March 2007Reply With Quote
one of us
Picture of JBrown
posted Hide Post
quote:
Originally posted by Duane Wiebe:
quote:
Originally posted by Masterifleman:
I will get a lot of flack over this, I'm sure. The standard H&H belted case uses a "GO" gauge of .220" and the "NO-GO" is .224". If you headspace using the "NO-GO" gauge you have built in excessive headspace. I have always used the "GO" gauge as a no-go and have NEVER had a rifle fail to chamber any manufacturers new case with ease. I would try a "GO" gauge before reaming the chamber any deeper and definately try your brass (full-length re-sized) before you alter anything.



If you use the "Go" as a "No GO" what do you use for a "GO"



Maybe a case of the brand the owner plans to use? I seem to have heard that is how some belted mag target rifles are chambered. I believe Saeed also said he uses a case as a "go gauge".


Jason

"You're not hard-core, unless you live hard-core."
_______________________

Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt.

Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry
Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure.

-Jason Brown
 
Posts: 6842 | Location: Nome, Alaska(formerly SW Wyoming) | Registered: 22 December 2003Reply With Quote
one of us
Picture of JBrown
posted Hide Post
quote:
Originally posted by Concho42:
well lets see ! If he started with a total of .004 on the Go gage he would be a Zero now ! but it's unlikely that there was .004 to start with ? so he is now at No Go ! which means pressures are extreme ! my question is who did this work in the first place ?


bewildered

I think you read the original post wrong. Or I might be reading your post wrong.

Anyway, how would decreasing headspace to .000 on the "go-gauge"(.220"), or even decreasing it to -.004 under the "go-gauge"(.216") have any affect on chamber pressure?


Jason

"You're not hard-core, unless you live hard-core."
_______________________

Hunting in Africa is an adventure. The number of variables involved preclude the possibility of a perfect hunt. Some problems will arise. How you decide to handle them will determine how much you enjoy your hunt.

Just tell yourself, "it's all part of the adventure." Remember, if Robert Ruark had gotten upset every time problems with Harry
Selby's flat bed truck delayed the safari, Horn of the Hunter would have read like an indictment of Selby. But Ruark rolled with the punches, poured some gin, and enjoyed the adventure.

-Jason Brown
 
Posts: 6842 | Location: Nome, Alaska(formerly SW Wyoming) | Registered: 22 December 2003Reply With Quote
One of Us
Picture of kcstott
posted Hide Post
You can head space a belted cartridge with a depth mic. To make it easier turn a plug and measure off it.


www.KLStottlemyer.com

Deport the Homeless and Give the Illegals citizenship. AT LEAST THE ILLEGALS WILL WORK
 
Posts: 2534 | Location: National City CA | Registered: 15 December 2008Reply With Quote
One of Us
Picture of Concho42
posted Hide Post
JB Thank you for pointing that out ! I was in a hurry when I wrote that and did not realize it was a button cartridge ! I stand corrected !


Don't take the chip !
 
Posts: 578 | Location: PA | Registered: 21 March 2007Reply With Quote
One of Us
posted Hide Post
I'll jump in in support of Mr. Lambert. Since pertinent dimensions of the receiver have changed, AND you're not using the barrel that was originally headspaced to the receiver, you have no idea how headspace will fall until you assemble barrel and recoil lug to the receiver and gage it.

Also, the receiver lugs and front receiver ring are both machined square when truing an action. Was the same amount of material removed from both surfaces? If so, the bolt face would have the same relationship to the belt recess in the ORIGINAL barrel. With a replacement barrel, all bets are off without gaging.

Dave Manson
 
Posts: 701 | Location: Michigan | Registered: 04 November 2007Reply With Quote
One of Us
Picture of Mike_Dettorre
posted Hide Post
If the head fits into the space, I think you are pretty much good to go


Mike

Legistine actu quod scripsi?

Never under estimate the internet community's ability to reply to your post with their personal rant about their tangentially related, single occurrence issue.




What I have learned on AR, since 2001:
1. The proper answer to: Where is the best place in town to get a steak dinner? is…You should go to Mel's Diner and get the fried chicken.
2. Big game animals can tell the difference between .015 of an inch in diameter, 15 grains of bullet weight, and 150 fps.
3. There is a difference in the performance of two identical projectiles launched at the same velocity if they came from different cartridges.
4. While a double rifle is the perfect DGR, every 375HH bolt gun needs to be modified to carry at least 5 down.
5. While a floor plate and detachable box magazine both use a mechanical latch, only the floor plate latch is reliable. Disregard the fact that every modern military rifle uses a detachable box magazine.
6. The Remington 700 is unreliable regardless of the fact it is the basis of the USMC M40 sniper rifle for 40+ years with no changes to the receiver or extractor and is the choice of more military and law enforcement sniper units than any other rifle.
7. PF actions are not suitable for a DGR and it is irrelevant that the M1, M14, M16, & AK47 which were designed for hunting men that can shoot back are all PF actions.
8. 95 deg F in Africa is different than 95 deg F in TX or CA and that is why you must worry about ammunition temperature in Africa (even though most safaris take place in winter) but not in TX or in CA.
9. The size of a ding in a gun's finish doesn't matter, what matters is whether it’s a safe ding or not.
10. 1 in a row is a trend, 2 in a row is statistically significant, and 3 in a row is an irrefutable fact.
11. Never buy a WSM or RCM cartridge for a safari rifle or your go to rifle in the USA because if they lose your ammo you can't find replacement ammo but don't worry 280 Rem, 338-06, 35 Whelen, and all Weatherby cartridges abound in Africa and back country stores.
12. A well hit animal can run 75 yds. in the open and suddenly drop with no initial blood trail, but the one I shot from 200 yds. away that ran 10 yds. and disappeared into a thicket and was not found was lost because the bullet penciled thru. I am 100% certain of this even though I have no physical evidence.
13. A 300 Win Mag is a 500 yard elk cartridge but a 308 Win is not a 300 yard elk cartridge even though the same bullet is travelling at the same velocity at those respective distances.
 
Posts: 10181 | Location: Loving retirement in Boise, ID | Registered: 16 December 2003Reply With Quote
  Powered by Social Strata  
 


Copyright December 1997-2023 Accuratereloading.com


Visit our on-line store for AR Memorabilia