Since all of the input on how my other WT gage would not work, and thanks to Jim, Jack, Miller and all those of you with your input, I decided to use most of the other componants and make this one. Basically the same as Jacks. I did add a spring to hold the barrel closer to the ball bearing and it works fine. About $17.00 for metal. Had a few Starett dial indicators laying around and it's about time I used them for something.
I was concerned on this WW Greener on the barrel wall thickness and the gunsmith I can go to hasn't been in his shop lately. Now he is off in Quebec so I decided to make my own.
The smallest measurment I got was .033 near the bottom rib on the right barrel and close to that on the left barrel. Those readings were about 10" from the breech. The largest not counting chokes was .046 in a few spots with the average being about .042.
Also at the muzzle the walls read with a dial vernier caliper .072 in left and .070 in right. In between both the land measures .055. So were the sides of the barrels machined flat for a distance and then soldered together? Talk about extra steps. In looking at some other guns all American I see there is land between the two barrels, so very slight and others a little heavier. Is this a common thing for European or English guns?
Right now it is set for reading 17 3/4", and I can change that to shorter or longer.
