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Birdhunter50,
I should point out here that I am not trying to promote threading over soldering, just that it is another method of fastening. As to the apples and oranges comparison, not sure about that one as both are methods of fastening two pieces of steel together, just different ways of achieving the same goal.
It is true that some bolt action rifles have greater wall thickness such as Mausers but not all do. My 1903 and 1910 Mannlichers have a wall thickness of 2.5mm (0.1 inch) and guns such as those made by Howa are similar. Most mono-blocks would have at least that much wall thickness especially with double rifles as the barrel stub is smaller in diameter as compared to a shotgun.
Bolt action rifles also have a significantly shorter thread length, often no longer that 3/4 inch and Mausers are only 0.5 inch. Commercial rifles often have a fairly poor thread fit as well. A mono-block however can be between 2 and 3 inches long and with a well fitted fine thread will provide massive strength and still allow for minimal wall thickness especially with todays modern steel.
This is particularly true if the male thread is cut with a Spiralock type thread where the torque loading is spread evenly along the length of the thread, as opposed to the normal thread form where the load is only over the first few threads.
I think it was P.O.Ackley who took an Arisaka rifle and kept turning a small amount off the thread diameter and than firing it with live ammunition. He kept doing this until there was almost no thread left and provided that the ammo was free from lubricant, the gun stayed together without spitting the barrel out.
As I said, I am not trying to say that soldering is no good or old fashioned, just that threading is a viable alternative and it can be done without the need for a muffle furnace or similar devices.

Waidmannsheil.

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