7-08 Go/No Go Guage

[RedRidge]

Looking for some 7-08 go no go guages to borrow if anyone is willing to lend them out. Thanks

 

[pods8 (Rugged Stitching)]

I got the forester go gauge for 243-308win (which covers 7-08) and just use the tape method for no-go.

 

[HandgunHTR]

I got the forester go gauge for 243-308win (which covers 7-08) and just use the tape method for no-go.

Same. EABCO has them for $32.

 

[Marbles]

I buy no-go gauges and use brass as the go gauge. I figure the no-go is most important to be correct from a safety stand point.

If doing a barrel nut install you will probably want a go gauge though.

Anyway, not much help for what you actually want.

 

[Mountainrancher]

308 Winchester Headspace Gauges

 

[HandgunHTR]

I buy no-go gauges and use brass as the go gauge. I figure the no-go is most important to be correct from a safety stand point.

If doing a barrel nut install you will probably want a go gauge though.

Anyway, not much help for what you actually want.

In actuality the field gauge is the most important from a safety standpoint, but nobody ever uses them.

 

[RedRidge]

Thanks all. I recently swapped a barrel on one of my tikkas and just need to check it.

 

[Marbles]

In actuality the field gauge is the most important from a safety standpoint, but nobody ever uses them.

No, field gauges are the absolute end of safety, they will show good to go status when a no-go will not. Outside of keeping weapons in service in an actual war, a field gauge should not be used in my opinion, particularly by people who hand load as so many are already running over pressure.

There is a reason nobody uses field gauges.

 

[HandgunHTR]

No, field gauges are the absolute end of safety, they will show good to go status when a no-go will not. Outside of keeping weapons in service in an actual war, a field gauge should not be used in my opinion, particularly by people who hand load as so many are already running over pressure.

There is a reason nobody uses field gauges.

I think you may be confusing the two. The go-gauge is SAAMI minimum. The no-go is SAAMI minimum +0.005 or 0.006" (depending on manufacturer), the field gauge is SAAMI +0.010. If your bolt closes on a field guage you are at the absolute maximum headspace (or over). You still have "safety" room even if it closes on a no-go.

 

[Marbles]

I think you may be confusing the two. The go-gauge is SAAMI minimum. The no-go is SAAMI minimum +0.005 or 0.006" (depending on manufacturer), the field gauge is SAAMI +0.010. If your bolt closes on a field guage you are at the absolute maximum headspace (or over). You still have "safety" room even if it closes on a no-go.

No, I'm not confusing the two and your own numbers prove it. Outside of war, if your bolt closes on a NO-GO gauge you should stop using the rifle. There is not "safety room" you are unsafe. Unless the cost of not shooting that rifle is more than the potential cast of loosing part of your face, there is no "safety room." You needing to add the "(or over)" lines up with this.

A NO-GO gauge says the chamber is safe for any round within spec, the field gauge says the chamber may result in a case head separation with cartridges that are at the minimum spec, but some cartridges will still be safe.

If you are happy shooting a chamber between NO-GO and field, you are free to do so. I will not be unless very important things depend on it.