JGS Adjustable Reamer Stop

[TylerFromMS]

@LVLAaron its pretty nice, not gonna lie.

@critter68 $131.40 to my door.

 

[urbanrifleman]

What is the preferred method of measuring the back of the headspace gauge to the shoulder?

 

[DaveTooley]

Various diameters and lengths.
The thimble squares up the gage and is repeatable to within a few tenths. I need to make one up for non shouldered barrels.

 

[TylerFromMS]

What is the preferred method of measuring the back of the headspace gauge to the shoulder?

Whichever works best for you. Depth mic, DRO, indicator, Coke, Pepsi, RC Cola.

 

[urbanrifleman]

Whichever works best for you. Depth mic, DRO, indicator, Coke, Pepsi, RC Cola.

I would really like to know how people use a depth mic to measure from the shoulder to the headspace gauge without it being totally suspect.

I've seen people talk about having a nut that they can put on the threads up to the shoulder and then actually measure from that.

 

[DaveTooley]

You could make a sleeve that went from the shoulder and extended beyond the gage. No need for threads. Then measure the distance to the gage. Then do the math. Just seems like there could be tolerance stacking and mathematical mistakes. Simpler for me to take a direct reading.

 

[boltfluter]

Various diameters and lengths.
The thimble squares up the gage and is repeatable to within a few tenths. I need to make one up for non shouldered barrels.
View attachment 1542670

Very ingenious tool. Sure would make the job easier going to a certain number. I don't do any chamber work, but if I did this would be on my short list of things to make. Nice.
Paul

 

[LVLAaron]

I have both. I use the threaded ones to keep track of an action and where the barrels need to be clocked. Once I have an action once, It's the only time I need it.

 

[TylerFromMS]

I would really like to know how people use a depth mic to measure from the shoulder to the headspace gauge without it being totally suspect.

I've seen people talk about having a nut that they can put on the threads up to the shoulder and then actually measure from that.

Yeah, you and I have talked about this but you didn’t understand. Get a thread checker/protector from BAT.

Edit: you’ve got a whole box of barrel nuts you can use for the same thing.

 

[nwmnbowhunter]

As someone who doesn't do any of this stuff, I still love learning about it.

Thanks for all the cool stuff you guys do and the pictures!!

 

[urbanrifleman]

Yeah, you and I have talked about this but you didn’t understand. Get a thread checker/protector from BAT.

Edit: you’ve got a whole box of barrel nuts you can use for the same thing.

Correct. I do understand the principle.

I was simply asking HOW the person measures... physically. Or the process with the nut.

 

[urbanrifleman]

I have both. I use the threaded ones to keep track of an action and where the barrels need to be clocked. Once I have an action once, It's the only time I need it.



View attachment 1542680

I want a set!!! Take my money!!!

 

[Judd]

I have both. I use the threaded ones to keep track of an action and where the barrels need to be clocked. Once I have an action once, It's the only time I need it.



View attachment 1542680

Would you quit...you're going to make me break down and buy a rotary.

Besides the cost...I haven't bought one because it will open up all kinds of "wifey projects" that I just don't want to do haha.

 

[LVLAaron]

Correct. I do understand the principle.

I was simply asking HOW the person measures... physically. Or the process with the nut.

Just an example; headspace on a Kelbly Atlas is .942
Collar is 1.2"

1.2 - .942 = .258

Install collar and HS gauge. Measure with a depth mic, which requires some feel, because the HS gauge can wobble a little bit. The .258 number is your target on the depth mic.

 

[LVLAaron]

I want a set!!! Take my money!!!

I wouldn't make my own again. I'd get the gauges from BAT. That way you have a thread gauge that's on dimension for their actions... don't need the action or thread wires, etc.


Kelbly's doesn't sell these, so please dont everyone call and beg for them... Next time your order something... ask nicely for the steel insert that goes into the pandas... Now you have a Kelbly gauge.




I dont know if Borden makes a gauge... but I bet he'd whip some up for a group buy.

 

[DaveTooley]

This prompted me to get off my ass. I ordered this for non shouldered barrels. Make up a collar and zero it on a surface plate. Beats the hell out of the three ring circus I've been doing. Depth mic and a separate collar.

 

[urbanrifleman]

This prompted me to get off my ass. I ordered this for non shouldered barrels. Make up a collar and zero it on a surface plate. Beats the hell out of the three ring circus I've been doing. Depth mic and a separate collar.
View attachment 1542746

Exactly

 

[B Nettesheim]

I made these for replicating headspace, cone dimensions and timing, they seem to get me within .0001-.0002

 

[LVLAaron]

Nice. I love that style of mic

 

[urbanrifleman]

View attachment 1542849
I made these for replicating headspace, cone dimensions and timing, they seem to get me within .0001-.0002

Exactly perfect fixtures.