Viggo
You might be right but i doubht it.
As it would have been perfectly possilbe to machine the frontsightband first and then thread after it.
But I have no clue how they ahve done.
At the actual picture I didnt use any lathedog as I was just removing a few thousands of the shoulder in order to index the barrel.
Normally I am using a L shaped lathedog that indexexes the barrel after one of the chuck jaws.
By the way, I don't like to remove my chuck all the sime so instead of using a center in the spindle that sits in the morsecone I use a homemade center that I have to turn each time.
That works better in that particular machine.
Regards HÃ??kan
http://www.vapensmedjan.com