Ruger Closing on No-Go

[Davehc130]

I picked up a Go and No Go gauge from Pacific Tool for a 6.5 Creedmoor...going to build a Kelblys action with Proof Barrel with the Bugnet system so I needed one.......so When the Go and No Go showed up I thought I would check my Ruger American Predator...Bolt closes on the NO GO Gauge..so NOW i am wondering if the Gun has excessive headspace even though it shoot sub .5 minute, or the gauge is off....

SO anyone have some ideas or recommendations? My buddy has a defiant action with Proof barrel...was going to see if it would close on NO GO Gauge on his gun....

 

[Steel+Killer]

The difference between a GO and a NO GO gauge is about the thickness of a piece of scotch tape. If your cases do not show any signs of case head separation I wouldn't worry about it. I have a couple ARs that have failed the NO GO gauge and I shoot the shit out of them.

 

[Deleted member 10043]

Is your MV and pressure higher than normal?
Otherwise, if it doesn't close on a field guage it is okay.

 

[Davehc130]

Is your MV and pressure higher than normal?
Otherwise, if it doesn't close on a field guage it is okay.

It closed on the No Go and Field gauge....no signs of pressure either

 

[Huskydriver]

It closed on the No Go and Field gauge....no signs of pressure either

Wait it closed on a field guage??? That's not good chief

 

[Davehc130]

Wait it closed on a field guage??? That's not good chief

yes it closed on all of them....shoots .5 moa and no pressure signs...glad I have a Preferred Barrels Prefit on the way to replace it....

 

[Codiekfx400]

If it closes on a field gauge you should be able to get a extra grain of powder in it. Lol

 

[f>b25]

Between JGS, Manson and PTG, and others I suspect, it is not difficult to find .002 diffierence in comparing their respective No-Go gauges as well as Go. It's possible to chamber at Go plus .008 with PTG and be +- .004 past a Manson No-Go for example. Closing on a field gauge would make be nervous though. Do you have light primer spikes? I'm a little surprised there is not a slight bulge near the brass' base . I saw a wildly out of headspaced tolerance 6.5 Grendel, easily closed on a Field Gauge, with ejected brass that looked like a 6.5 Grendel belted mag. Could it become the next hot wildcat? 1.5 extra grain? Nice!

 

[tsu45]

I wouldn’t count on reloading your brass if it closes on a field gauge.

 

[Davehc130]

Between JGS, Manson and PTG, and others I suspect, it is not difficult to find .002 diffierence in comparing their respective No-Go gauges as well as Go. It's possible to chamber at Go plus .008 with PTG and be +- .004 past a Manson No-Go for example. Closing on a field gauge would make be nervous though. Do you have light primer spikes? I'm a little surprised there is not a slight bulge near the brass' base . I saw a wildly out of headspaced tolerance 6.5 Grendel, easily closed on a Field Gauge, with ejected brass that looked like a 6.5 Grendel belted mag. Could it become the next hot wildcat? 1.5 extra grain? Nice!

I’ll have to check when I get home.... need to check gauges on another rifle to see if it’s a gauge issue or rifle issue. How would I measure the gauge to check for accuracy... I tried to measure overall length but the no go measured less than the go gauge.

 

[JMcBurn]

If you reload you are probably fine. But in general, the case head separation issue is only and issue if the case head is not supported from a short shoulder not really an issue for a chamber that is reamed deep.

 

[Steel head]

If it closes on a field gauge you should be able to get a extra grain of powder in it. Lol

6.5 Creedmoor improved!

 

[Another Casual]

Just for clarity, your first post said you had a go and no go gauge. Do you have 3 gauges? Closing on field gauge would show headspace as even more than what the no go would allow.

 

[Davehc130]

Just for clarity, your first post said you had a go and no go gauge. Do you have 3 gauges? Closing on field gauge would show headspace as even more than what the no go would allow.

yes I have 3 gauges...it closes on all three

 

[SharpsNitro]

Have you measured how much the shoulder is moving forward from an unfired case? Closing on a field gage is not good.

 

[smoothy8500]

Had a friend say his rifle closed on a NO-GO gauge. Apparently it didn't take much force at all....

 

[Davehc130]

Have you measured how much the shoulder is moving forward from an unfired case? Closing on a field gage is not good.

Well I bump the shoulder back 2 thou after firing, but I did not measure virgin brass....I guess I can do that...

 

[Wheres-Waldo]

Dave,

If you have the ability to measure how much your setting the shoulder back....

Take that ability and measure the HS GO gauge. Now measure some FIRED cases. How much of an increase did you note?

HS dimension + difference noted + ~.001” =. Your guns headspace ?

 

[Davehc130]

Well I rechecked my Gauges, and I must have missed something the first time....the gun does indeed still close on the NO GO but DOES NOT close on the Field gauge so that is good news...my son has the exact same Ruger American Predator and His gun DOES not close on the NO GO....I guess I should not be surprised on a factory mass produced rifle....better news is my Prefit Preferred Barrel gets delivered tomorrow!! Too bad I won't be home to get it though, since i will be out ELK HUNTING!!! Sweetness!!!

 

[LtDan47]

My 6.5 Creedmoor American Predator was .009 off when I got it. My first set of reloads has 2 case separations on the first reload. I ordered the Go and NoGo gauges and made a barrel nut wrench and reset the barrel no problem since.

 

[King_beardsly]

You know you’ve got a problem when factory ammo is looking like this and your bolt is closing on a no go gauge. View attachment 7145563

Just a tiny bit of stretching

 

[Davehc130]

remedied the issue....installed a profit Preferred Barrel....26 inch Hvy Palma...will head out tomorrow to break it in....it is headspace correctly now....Does not close on the no go.....sometimes you just gotta do it yourself....