headspace

[juggaloxxl]

my mauser 98 with the no go headspace gauge the bolt will close and the bolt will turn halfway to lock is it time for a new barel or is there another way to fix it?

Read More

 

[chainsaw]

Depends on how far "out"it is.Put 2 layers of scotch tape on the bolt end of the gage,and try again.If the bolt won't close,shoot the gun.If it does close on it,take it to a gunsmith and have the gun fixed.New barrel not nessisarily required.

 

[HollisOR]

my mauser 98 with the no go headspace gauge the bolt will close and the bolt will turn halfway to lock is it time for a new barel or is there another way to fix it?

With a no go gauge the bolt should not close all the way. Partial closer is OK. If it almost closes than it is almost time. If it closes all the way, it is unsafe.

Chainsaw, the tape is for a go gauge, it is also not 100 reliable. Adding tape to a no go gauge will only give a false reading.

Other indicators is a sticky, bolt, on firing the bolt seems stuck. One can also inspect the case.

In all this situations it is wise to consult a competent gunsmith. In text it is easy to misread or misinterpret.

 

[madcratebuilder]

With a no go gauge the bolt should not close all the way. Partial closer is OK. If it almost closes than it is almost time. If it closes all the way, it is unsafe.

+1, if you can only turn the bolt part way, not to complete lock you are within spec. Many of the mil-surps are still safe to shoot when closed on a NO GO gauge. If it closes on a FIELD gauge don't shoot it.

Read this.

http://hybrid.ualr.edu/satu/headspace.html

 

[bcp]

"NO-GO" is maximum for a new barrel, bolt, etc. "FIELD" is maximum for rifles that have been used, a "in the field" check to see if they are worn out yet.

Bruce

 

[MountainBear]

If the bolt closes on the no-go and field guages, the fix is as follows (and the complexity should convince people that a gunsmith might be the best option).

First, it must be determined how out of headspace the gun is. Once that number is determined, the barrels is removed. One to several threads worth of the threaded barrel shank are removed, in order to maintain the indexing for the sights. More length than the over-sized headspace is removed. The barrel then has the chamber punched back out to the proper headspace and the barrel is re-installed. If too many threads have to be removed, then there will be insufficient torque shoulder (both interior and exterior in the case of the Mauser) and a completely new barrel is required...