Stiller Spectre action question - threads

[Hydra6]

I have a Stiller Spectre action that has served me well - the current barrel needs replacement. Does anyone know the threads of the Stiller Spectre action - wondering if I can use a Remage setup versus taking to gunsmith for custom barrel threading (know it is not prefit compatible). Thanks

 

[JuddL]

1 1/16 - 16tpi so threads should match…what I don't know is the bolt recess the same.