Good Starter Project For Barreling

Jim Wooten

Jim Wooten

Just Me
Since we have had a number of less experienced guys (like me :D) posting about getting started in barreling recently, I thought this project might be of interest to someone. It is a fixture for matching your new barrels' chamber length to your old barrel, or any other barrel that you might want to duplicate. I won't get into whether you want to call this headspace or something else, but it sure makes life simpler when setting up a full length sizing die to use with more than one barrel.

I am sure the experienced guys made something similar years ago, but for those of us that are new to the process, this makes measuring much easier and more repeatable. Something similar may be available commercially, but I didn't know of one, so I spent an afternoon making my own.

I started with a scrap piece of 1.5" round bar, and bored it to be an easy slip fit for the largest of my barrel tennons (about 1.070" works with my BAT, Stolle, Rem 700, etc). The top is drilled about .126" to work with Starrett, Brown&Sharpe, etc, depth mics.

I may make up another with a permanently attached depth mic without the T foot piece if I can find a reasonably priced one. So many projects............;)

Makes re-barreling a glue-in a bit easier, as obviously it can be used with the barrel still in the lathe and the action still in the stock if you have the old barrel for measurements :).

Sorry I didn't clean up the fixture and barrel, or use a special photographic backdrop for the photos :D.

Jim

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MeasuringDevicecopy.jpg
 
NICE!

I like the "window" idea. This lets you see exactly what the depth mic is doing..........

A permanently attached mic would only make it better!

Nice work!
 
David Sengelaub said:
A dial indicator would also work nice
Click to expand...

Yes, that would have been nice. I have a Starrett ten thousandths indicator that I did consider using, but it only has a .025" range. I decided that I wanted more range of travel to allow more versatility. I may still do that as a dedicated device for each type of action though.

I have a .0005" indicator with sufficient travel, and with a little "guesstimation" that might work almost as well. May try that this week :D.


Jim
 
big snake,
that's nice,, is mine coming UPS, USPS or FED EX????

the wind is my friend,,,,,,,,,,,,,,,,

DD
 
Jim

.please email me at nevrhad2 AT nvbell.net thanks .......Jan
 
I made a few of these only I threaded the inside for the particular tenon I wanted it to fit, the ones I use the most have a digital micrometer head on them and the others have just standard micrometer heads. You can usually get micrometer heads at a reasonable price off Ebay.
I just haven't milled the window in them like you have........Ian

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Ian_Owen said:
I made a few of these only I threaded the inside for the particular tenon I wanted it to fit, the ones I use the most have a digital micrometer head on them and the others have just standard micrometer heads. You can usually get micrometer heads at a reasonable price off Ebay.
I just haven't milled the window in them like you have........Ian

Ian,

Very nice work.

Actually I had been using a threaded insert from a Panda action with my manual depth mic before making the one pictured. I just decided to make the non-threaded one for speed and interchangeability.

I also wasn't sure how repeatable the lower priced electronic digital mic heads might be judging from prior experience with regular digital mics, and didn't want to spend what a good digital mic costs :eek:.

Jim
Click to expand...
 
I made the center hole large in dia so that I could measure the bolt nose recess accurately by moving the depth mic over what ever surface I was needing to measure. This is only important on Remington style tenons.
 
Jim, Both micrometer heads are Mitutoyo and are very accurate and repeatable, and both cost less than $50 ea. But the Starrett micrometer heads I used on the other ones cost about $50 for 6 of them and they were all new........Ian
 
Ian_Owen said:
Jim, Both micrometer heads are Mitutoyo and are very accurate and repeatable, and both cost less than $50 ea. But the Starrett micrometer heads I used on the other ones cost about $50 for 6 of them and they were all new........Ian
Click to expand...

Ian,

I found a Mitutoyo digital/analog mic, and had a bit of 1.5" water well drill rod, so I made up version number two. Seems to work fine.

Jim

ChamberMiccopy.jpg
 
Here is some tooling I made years ago to do Mauser Barrels with. Since then I have had to expand out to some of the other receivers, Winchester, Remington, Savage . .etc. Since nearly all of the Mauser Receivers were out of square at times, I usually faced them, then ran the threaded insert into the receiver and turned the bolt down to the bolt face and locked the nut, then took it out and set the alum. piece with the indicator over that and set the indicator to "0". I can usually get the Head Space dead on in the lathe, sometimes I have to go in a hand do the chamber about .001 - .003 after torquing it down . . . Has worked well for years. . .

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Need is the author of invention . .
 
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