8mm mauser recommendation

[JohnKDM]

On the subject of headspacing - a great many milsurps will accept a NO-GO gauge. Some are not aware there are three gauges; GO, NO-GO, and FIELD. The first two are used to determine the chamber and ensure factory ammo will work. The FIELD is longer, and it represents the point where it should not be fired. Of course, headspace exceeding a NO-GO will likely be hard on brass reloading and accuracy, it isn't necessarily bad. What you don't know, without the FIELD gauge, is just how far past NO-GO is it?

 

[Purdue1991]

On the subject of headspacing - a great many milsurps will accept a NO-GO gauge. Some are not aware there are three gauges; GO, NO-GO, and FIELD. The first two are used to determine the chamber and ensure factory ammo will work. The FIELD is longer, and it represents the point where it should not be fired. Of course, headspace exceeding a NO-GO will likely be hard on brass reloading and accuracy, it isn't necessarily bad. What you don't know, without the FIELD gauge, is just how far past NO-GO is it?

Agreed. Only way I'm using a rifle where head spacing is between no-go and field gauge is if I'm running light loads.

When a bolt closes on a no go gauge it usually means the lug recessed have setback or recessed over time or due to a soft receiver. Or someone has swapped bolts to a non numbers matching.

 

[ISO400]

On the subject of headspacing - a great many milsurps will accept a NO-GO gauge. Some are not aware there are three gauges; GO, NO-GO, and FIELD. The first two are used to determine the chamber and ensure factory ammo will work. The FIELD is longer, and it represents the point where it should not be fired. Of course, headspace exceeding a NO-GO will likely be hard on brass reloading and accuracy, it isn't necessarily bad. What you don't know, without the FIELD gauge, is just how far past NO-GO is it?

thanks for the info! I probably won't trust my limited knowledge so I guess i'll be getting an experienced gunsmith to minimize the chances of blowing up my face hhh. it's good to learn though!

 

[Creedmoor]

Agreed. Only way I'm using a rifle where head spacing is between no-go and field gauge is if I'm running light loads.

When a bolt closes on a no go gauge it usually means the lug recessed have setback or recessed over time or due to a soft receiver. Or someone has swapped bolts to a non numbers matching.

That right there is a good reason to reload and with that one can resize the fireformed cases to THAT chamber.