Saad,
when I bored the chambers, I cut the barrels at about 8" from the breach, then simply turned a piece of steel bar (mandrel) in the lathe to fit the bore, TIG tack welded the bar in one of the barrels, put the bar back in the lathe, indicated (trued) in the breach end of the chamber and bored just over 3" deep to the desired diameter, removed the bar and barrel from the lathe, cut the tack welds, repeat the process on the second barrel, cut the barrels to just over 3" with a saw, turned another bar about 2 3/4" long that the newly bored oversize barrels would fit over tightly, put the barrels on the bar with the forward end of the barrel where you can face off it squarely to the bore. Repeat on the other barrel.
It's extremely important that the forward face of the barrels be perfectly square to the bores. It's also extremely important that the bored out chambers follow the original line of the bore. So, I didn't use reamers for any of the work but rather indicated in and bored with single point tools.
Last edited by Chuck H; 05/02/07 01:29 PM.
