Looking for Headspace tool made buy someone on here

[kawsam62s]

Here is my attempt
Thx for help everyone!

 

[kawsam62s]

Another

 

[Dusty Stevens]

Very nice. Id make those windows about twice that big. It doesnt need to be strong but its nice to be able to move stuff around inside there

 

[kawsam62s]

Very nice. Id make those windows about twice that big. It doesnt need to be strong but its nice to be able to move stuff around inside there

They are 3/4 I thought about the 1 inch ball falling out under use, I could still open them up to 1inch or bigger?

 

[Dusty Stevens]

They are 3/4 I thought about the 1 inch ball falling out under use, I could still open them up to 1inch or bigger?

Make em oval shaped juust small enough the ball stays in

 

[gunnermhr]

I'm not sure the ball idea is as good as what Butch and Jackie are using. Wouldn't the ball method be specific to the size of the chamber, and also dependent on making sure the headspace is spot on, whereas a measuring cone like they're using actually measures the depth of the cone based off the cone itself and not the diameter of the chamber.

 

[butchlambert]

I'm not sure the ball idea is as good as what Butch and Jackie are using. Wouldn't the ball method be specific to the size of the chamber, and also dependent on making sure the headspace is spot on, whereas a measuring cone like they're using actually measures the depth of the cone based off the cone itself and not the diameter of the chamber.

They are only using it to compare a known measurement of another barrel that they are duplicating. I believe they are measuring a cone for clearance to the bolt nose.

 

[gunnermhr]

They are only using it to compare a known measurement of another barrel that they are duplicating. I believe they are measuring a cone for clearance to the bolt nose.

I use a similar device like you have, which for instance, a BAT will measure the same no matter the caliber and give you .007" clearance repeatedly

 

[gunsandgunsmithing]

I'm not sure the ball idea is as good as what Butch and Jackie are using. Wouldn't the ball method be specific to the size of the chamber, and also dependent on making sure the headspace is spot on, whereas a measuring cone like they're using actually measures the depth of the cone based off the cone itself and not the diameter of the chamber.

The ball diameter matters. All you need is a datum that's larger than the back of the chamber.
But yes, if the ball is too small, it will only contact the chamber mouth and provide an irrelevant measurement.

 

[Dusty Stevens]

The ball diameter matters. All you need is a datum that's larger than the back of the chamber.
But yes, if the ball is too small, it will only contact the chamber mouth and provide an irrelevant measurement.

Only big balls matter

 

[Dusty Stevens]

I have used both and get a repeatable measurement every time with the ball. The cone trying to match up with the other cone takes some wiggling to get 2 measurements the same. I use a 1” ball because it zeroes out the 1” mic and fits all cones no matter the cartridge

 

[gunnermhr]

But, a 1" ball isn't big enough for a say a dasher. I'm not sure you can get a ball big enough to measure off the cone without exceeding the tenon diameter. I'm not arguing by any means, just want to be sure I'm not missing something

 

[Dusty Stevens]

But, a 1" ball isn't big enough for a say a dasher. I'm not sure you can get a ball big enough to measure off the cone without exceeding the tenon diameter. I'm not arguing by any means, just want to be sure I'm not missing something

Not sure what you mean

 

[GenePoole]

I do the trig on the "back of an envelope" then verify in CAD. This is for a Panda with 308BF:

 

[WSnyder]

The 1" ball works on 30° cones but mby not so much on 25° cones.

 

[Dusty Stevens]

I always set my complete tenon up before i cut a chamber. I crushed a bunch of solder on every size boltface on mainstream actions to get my setup over the years. I still crush a lot of solder veryfying

 

[gunnermhr]

The 1" ball works on 30° cones but mby not so much on 25° cones.

I was totally thinking of BAT's, I didn't consider the 30° cone of Kelbly. This is what I made for measuring cones, I always double check for clearance afterwards. Thats why I asked about the ball, I think it might be a little more precise

 

[gunnermhr]

Not sure what you mean

Dusty, on a BAT the 1" ball sits on the corners of the chamber and not on the angle of the cone, I don't have a drawing as nice as Gene's but the attached pic explains it a lot better than I can word it. If you're looking to hit exactly .007 clearance on the Nose cone using the ball, you would have to have that measurement for each chamber that is different and also count on the headspace being 100%

 

[GenePoole]

I always set my complete tenon up before i cut a chamber. I crushed a bunch of solder on every size boltface on mainstream actions to get my setup over the years. I still crush a lot of solder veryfying

Solder always has the final say.

 

[tobnpr]

I use Plastigage, same idea...