Originally Posted by zoeper
I would like to re-crown and thread one of my barrels and could do with some advice.
My lathe only passes 3/4" through the headstock so i can not crown using a 4jaw and a spider on the back of the spindle.
I want to clamp the chamber end in the 4jaw and run the muzzle end in a steady. doing it this way would make it impossible to set up concentric to the bore as opposed to concentric to the outside of the barrel.
I was thinking that it might be better to set up with a tailstock center and cut the thread and shoulder first as well as Crowning the outer part of the muzzle.
I can then fit a thread protector and cut the OD of the thread protector) smooth while running between centers and then do a recessed crown while running the steady on the thread protector.
Any advice or comments apreciated
Get a range rod from PT&G for your bore Dia. and carefully insert it in the muzzle end of
the barrel and using the Steady rest Indicate it on the range rod until it is true. This way
your crown and threads are off the same center line and accurate.
After it is dialed in remove the range rod and you are ready to go.
Do the crown last so if you need to shorten the tenon to get the proper fit in the brake.
Again; be very careful any time you place anything in the muzzle end of the barrel and
dont put any force on the range rod.
Hope this helps.
J E CUSTOM