Sears Model 51l (Husqvarna made) barrel thread form

[Fishoot]

I have looked all over for a specific mention of the proper thread form for the Sear Model 51L made by Husqvarna. I have pitch and diameter, but what is the form 55 or 60 degrees?

[KenT7021]

Probably 55 degree Whitworth.

[deltaenterprizes]

Do you have a thread pitch gage?
If you do hold it in your the threads of the barrel stub , if you see light it is not 60*

[Fishoot]

I cut the threads a 55 degrees, all seems well. Thanks for everyone's help! I chambered it today. It still needs bluing so I'll do a Mark Lees rust brown (really black if boiled). The step after that is getting the trigger guard refinished. It will probably get a ceracote or one of the other tough spay on finishes.