The attached is a photo of the new Midrometer Adjustable Reamer stop. patent pending and soon to be available from PT&G and others.
Micrometer Adjustable Reamer Stop.

Try and resize the pic. It works like a case trimmer? I think I would still like to finish by hand. It's a feel thing I guess. Looks usefull though.

Shawn

A dial indicator on the tailstock quill is hard to beat as a precision stop. It's fast but it requires you to watch the little hand and the zero. On the other hand, no pun intended, my hand wheel scale is very accurate. So for my final cut, I will clean the chamber real good, insert the reamer and advance the quill until the reamer just bottoms out against the chambers shoulder, and then I will set the wheel to "0". If I only need to go .011 then I move the wheel .011 and I'm done. Real simple and cheap.

Malm, don't be so damn practical.

I just chambered my first gun using the Lambert / Kiff micrometer adjustable reamer stop. Where has this thing been for the last 15 years that I have been fitting barrels? The unit consists of a “set†of bodies that attach to the reamer and controls the depth that the reamer can cut. By attaching directly to the reamer: The reamer becomes a micrometer pinion and the barrel trunion becomes the face of the anvil. Because it uses the reamer itself as the gauge it doesn’t matter where the tail stock or carriage it located. The system is PERFECTION as it measures directly off the reamer. (This unit is very much like one I have had prints for, that Ackley drew up years ago, only better, and I didn’t need to spend a week building it.) The time it will save is well worth the price! Until today I have used: Stops, and set them against the go gage and then reset them with feeler gages to cut the depth after getting close, Had an indicator attached to my tail stock and a reference on the tail stock quill to show travel, and every other method that you can think of. This unit lets you almost quit thinking and just ream until the stop hits the barrel. It worked great with my JGS floating reamer holder.

The Micrometer has 50 indexing marks and will allow for .0005 adjustments. I set it about 30 thousands short of finish depth off of the headspace gage, and cut the chamber to this short depth. Then after the collar hit the trunion, I measured again off of the headspace gauge and re-adjust the micrometer to final depth and cut. Where the unit really shines is on throating. Once you know where you are, and where you want to go adjust for the depth and ream. With the Lambert unit you can set and then cut the throat to the exact dept you want.

I have a lathe set up just to chamber with a four jaw chuck and a spider on the other side and pump fluid through the barrel as I work. With the pressure turned up I ran to the -.030, then turned the pressure down and worked my way up to the final cut, less what crush would be. The net net net was a perfect chamber in less than half the time that I normally spend. Next time I have a job to do for one of my bench rest shooters who want 3 or 4 barrel exactly alike I’m going to take the few hours I save and go buy a bottle of good Scotch and send it to Nat Lambeth! (Nathaniel Lambeth at: Custom Guns and Ammunition. 15 Sunflower Drive Youngsville, NC 27596. ngl_services@juno.comis )

After purchasing the unit, I received a call from Mr. Lambert, you couldn’t find a nicer person, who spent over an hour on his nickel to talk with me about what the unit could do and a few other projects he is about to knock our socks off with. IF YOU DO ANY CHAMBERING YOU NEED ONE OF THESE, and after you use it you will never go back to any outer method. This may sound like a paid endorsement but I’m just a happy end user.

Price and order information? I would like to chamber a few barrels my self and this seems like a winner. I would like to see a larger picture.

Judge Sharpe

Delivered it was around $220.00, with the full set of bodies, (1.0, 1.25, 1.50, and 1.75 Two collars long and short, and the Dial).
Contact Nathaniel Lambeth at: Custom Guns and Ammunition. 15 Sunflower Drive Youngsville, NC 27596. E-Mail: ngl_services@juno.com

56 years old - I remember 56 is was - What was the subject????

RC:

Thank you for the post. It is always good to have positive feedback. There is nothing like a better mouse trap. Dave Kiff of PT&G and I have been working on this project since last October. It is finally all coming together. I hope you have many years of successful chambering with the Micrometer Adjustable Reamer Stop.

Many folks don't believe I chambered over 300 new barrels in 2005 and did another 115 setbacks. Now you know how. Where it use to take three hours to chamber a barrel I can do one in less than an hour now. And do it right. I have customers who have their own reamers who have bought the Micrometer Asdjustable Reamer Stop and set them on the reamer and never changed them again. Even a different gunsmith can cut a duplicate chamber using one of these reamers with the Micrometer Adjustable Reamer Stop. They work great for throating also.
Good luck and thanks for your words.
Nathaniel G. Lambeth, Sr.
Custom Guns and Ammunition
15 Sunflower Drive
Youngsville, NC 27596
(919)556-0554 home/shop evenings
ngl1@earthlink.net
http://home.earthlink.net/~ngl1

Nat does some wonderful work and makes some really nice tooling.
Butch

Folks:

I have just sold the last of the first production run of the Lambeth/Kiff Micrometer Adjustable Reamer Stops. Due to demand there is a second and third production run under way. They should be available in the next 30 days. We now have Micrometer Adjustable Reamer Stops on all continents. We have some accessories coming out also,IE: hand driver for finishing short cut chambers and throating applications.
Longshot
http://www.home.earthlink.net/~ngl1

I had a short day yesterday, Nat. I chambered 6 barrels, went for a long lunch, and had to explain to my wife why I was out walking the dog and not working when I told her that I had to get the barrels done and couldn’t go to a meeting with her. The tool works great! My Doctor may not like it however; I have more time to smoke and drink coffee now.
Let us know about the new accessories when they hit the market.
RC - Territorial Gunsmiths - www.gunsmith.net