Rebarrelling tool

[Boucher]

This is my version of a Tool that Shelley Davidson posted over on the PM site.
http://i109.photobucket.com/albums/n50/boucherbyron/IMG_0047.jpg

When rebarrelling a Rem 700 the Go-Gauge is very near flush with the end of the barrell.
http://i109.photobucket.com/albums/n50/boucherbyron/IMG_0045.jpg

Measuring this dimension with a standard depth Mic is kind of a rocking/unsteady operation.
http://i109.photobucket.com/albums/n50/boucherbyron/IMG_0046.jpg

With this tool screwed onto the end of the barrell until it bumps the shoulder it is easy to measure to the gauge.
http://i109.photobucket.com/albums/n50/boucherbyron/IMG_0044.jpg

On hunting rifles the action can be used to check thread fit and headspace. The action on many bench guns is glued into the stock and can't be used for fitting. I like to thread and cut the shoulder before I chamber. Take the measurment off the old barrell and chamber the new one to the same dimension. Works like a charm! A similar tool can be made for measuring barrell cones.

[38_Cal]

Nice tool. I designed one like it, but to use a standard depth mike, probably twenty years ago when I was at Brownells, but they didn't want to produce it...thought that there wasn't enough of a market for it. :rolleyes: I've since seen a couple of similar designs offered commercially.

David

[Boucher]

My original take on this concept was to make a 1” long threaded collar with a wider thicker flange for the depth mic to set on. After Shelley posted this concept I decided to make one of these for the Remington 700. Shelley uses a setscrew to hold the Mic in the tool that makes it easier to move it from one tool to another with a different thread.

The question of how much market is out there is an interesting one. Years ago I called LaBounty to order one of the Bolt fixtures that he made. When I gave him my address in Texas his comment was, “There must be an amateur gunsmith behind every cactus in Texas”. He had sold a surprising number of them down here. It would be interesting to know how many of Rusty Stud’s chambering reamer depth gauges are being sold. His is an elegant solution to a nagging problem. There was quite a bit of discussion of price. I think it was a good bargain and very well designed and fabricated.

[rws]

I too have made a similar tool for barrel work. I use a 2" travel dial indicator that is zero'd on a flat plate. I use three inserts, one is square with a step that is used for tenon length, headspace, etc. The other two are angled, one 30 degrees the other 25 degrees. Benchrest actions (most) use coned bolts to aid in feeding. The appropriate degree insert mates with the cone turned on the barrel.

It's a lifesaver and time saver. I can't imagine doing barrel work without them.

I can take measurements from a finished barrel, along with thread wire readings and a threaded collar to clock the barrel markings, and do a complete barrel ready to screw on and fire.

http://i122.photobucket.com/albums/o272/shawsplace/Gauges1.jpg

http://i122.photobucket.com/albums/o272/shawsplace/Gauges2.jpg