Thread: Barrel Fluting

Had the same thing yesterday.
First time thread turning for several years.
Was a bit of a pain turning a 1/2×20 thread on nearly an inch diameter barrel.
Glad the lathe had a brake as I just wouldnt have been able to wind the cross slide out quick enough.
Did an under cut as just possible to get the thread right up to the shoulder
It was a martini international I acquired from gundoc.
As it is a pain to remove barrel and I have never had a cats head I did what he suggested and used a center on the muzzle end and tried it up at the rear by the action.
Was starting to overthink it when I saw a wobble in the barrel but just ran with it for the same reason.
Bore was straight so stuck with what it was.
Only thing I didnt do from his suggestion was use a brass insert in the bore. Just used a revolving center and made up a dolly to screw on the end after threading and then machining it true to use in the steady and did a 11 deg target type crown.
I will say it was pretty central at the muzzle.
Still to shoot.
Think I will have a play making a cats head for.the future