Take off barrel opinion

[806guns]

I have a barrel off my GAP Templar 2. I have a spare 700 action and had the go gauge in the bolt and set head space. Measured from the action face to the barrel and got .270 can i get a custom recoil lug and check headspace for proper fit. Seems simple enough. This is a expensive barrel and would like to use it on my 700 action vs the GAP for a while.

I have been headspacing remage barrels for the last three years for those who question my experience lol.

 

[jelenko]

Maybe it's obvious, but the .270 is from the action face [on the Templar action?] to what part of the barrel?
Also, why would a custom lug [a locking lug?] be needed to check headspace when the barrel is screwed on the 700?

 

[Kurz]

It's hard to find custom ground lugs, it's a time consuming process for just one lug. The thickness of 0.270" is an oddball from the start since the standard is usually 0.1875" or 0.250" these days.

Here is one that's close:

https://pacifictoolandgauge.com/remington-700-recoil-lugs/11427-275-recoil-lug-taper-1-pin-ss.html

 

[SteveOak]

I recently purchased a used barrel from a member here. It was fitted for a Borden TPE/Nesika J action but WITH a .312" recoil lug. Mine is a glue in and has no recoil lug. I bought a surface ground recoil lug and cut off the protrusion to make a round spacer. Headspaced fine. Best group so far is a 0.058" @ 100 yards. Good enough for what I use it for.

A Go gauge is sized for minimum SAMMI chamber length. You might want to add a couple of thou.

 

[Kurz]

Maybe it's obvious, but the .270 is from the action face [on the Templar action?] to what part of the barrel?
Also, why would a custom lug [a locking lug?] be needed to check headspace when the barrel is screwed on the 700?

Likely you are confusing the term 'lug'.

His reference is to the recoil lug not the bolt lug.

 

[806guns]

It's hard to find custom ground lugs, it's a time consuming process for just one lug. The thickness of 0.270" is an oddball from the start since the standard is usually 0.1875" or 0.250" these days.

Here is one that's close:

https://pacifictoolandgauge.com/remington-700-recoil-lugs/11427-275-recoil-lug-taper-1-pin-ss.html

Is there a better process to find the correct thickness ? I know there will be some stretch when the barrel is torqued properly.

 

[Kurz]

806guns,

Real gunsmiths can fix and adjust your problem no sweat. Better than trying to adjust an expensive barrel without the experience.

 

[806guns]

806guns,

Real gunsmiths can fix and adjust your problem no sweat. Better than trying to adjust an expensive barrel without the experience.

I like the challenge. I will order the one from PTG and adjust accordingly best thing i can think of. There is a machine shop in town if i need the .300 lug i can have then surface grind it for me.
Closest gun smith i trust is 2 hours away.

 

[jelenko]

Likely you are confusing the term 'lug'.

His reference is to the recoil lug not the bolt lug.

Ah, thanks.

 

[mike mccormick]

How much clearance do you have between the bolt and the barrel?

 

[806guns]

Bolt with headspace gauge installed.

 

[urbanrifleman]

View attachment 1560222
Bolt with headspace gauge installed.

You will want about .267".

 

[msalm]

You will want about .267".

More likely the other way. .273” is what I’d do for a lug thickness. Or use a standard .200 lug and have someone machine a 73 thou thick spacer ring that’s a slip fit on the bbl tenon.

 

[urbanrifleman]

More likely the other way. .273” is what I’d do for a lug thickness. Or use a standard .200 lug and have someone machine a 73 thou thick spacer ring that’s a slip fit on the bbl tenon.

Yes, sorry. Was thinking in reverse!

 

[806guns]

Ptg offers a .275 i ordered one ! Now if it shows up within 6 months thats another story

 

[806guns]

Looks like i need to cut .003 off the new lug. Based off my no go with scotch tape on the backside till it locks.

Good thing i have family with the proper machines

 

[806guns]

Sometimes these projects are a pain but when it works the success is awesome! Go and no go gauges work perfectly!

 

[gunsandgunsmithing]

I realize that people do this and live but heaspace is only one of a few critical dimensions of a bbl relative to the bolt. Bottom bbl clearance is an important and critical safety spec as well, for example. A recoil lug can only address one of the dimensions. I suggest talking to a good smith that you trust for some help and insight as to why the clearance numbers are critical and what they should be

 

[806guns]

Im willing to learn if someone will show me. Local gunsmiths arent a thing around me. They are at least 2 hours away and might not have the time to show me the ins and outs. As they dont know me.

 

[msalm]

The only other critical issue would be clearance of the bolt nose in the counterbore…should be at .010” or less (but more than .005-7). Basically too deep of a counterbore would leave unsupported case and too shallow your bolt nose would hit. This is pretty unlikely but it could be too tight. With the bolt closed on an empty chamber and the firing pin either removed or in fired position, push bolt forward and aft to see how much movement you have. If the bolt handle bottoms out on the action to the front of the bolt notch you won’t be able to get an accurate read as you’re trying to see where the bolt nose hits the barrel counterbore.

The alternative method is to stick a piece of lead (solder works) on the bolt nose and close it in the barreled action. Remove carefully and measure the thickness where the bolt nose squashed against the barrel counterbore. .007-.010” is ideal.