Using small shank Savage barrels in large shank actions…
The Savage Target action which I’m sure you are all aware comes threaded 1 1/8-20 (1.125 dia. OD) UN for the large shank barrels and the small shank barrels use 1 1/16-20 (1.050 dia. OD) UN. Savage has stated for quite a few years now that they are going to go exclusively with the large the shank barrel size for all their barrels in any caliber but so far have not with only the magnums & WSM’s having the 1.125-20 thread.
By and large small shank barrels are much easier to find OTS than the large shank barrels so I’m going to propose a way to fix the problem.
If you compare the thread dimensions in machinery’s handbook you will realize that there is a difference of .060 between the crest and root of both treads which means you could make a threaded sleeve with both a 1 1/8 UN external thread and a 1 1/16-20 UN internally threaded sleeve and have a wall thickness of .032 per side between root and crest. If both were cut in one set-up it would guaranty perfect concentricity with “0” run out. Using Ryerson’s etd 150, Fatigue Proof or similar high strength steel I would be confident it would work. Of course a stress analysis and proof testing would need to done to validate the numbers.
The sleeve would be installed with removable Loctite adhesive on the outside thread and screwed in a thou or so below the action’s face.
If there are any manufacturers out there that are reading this please feel free to run with the idea.
Savage builders please let me know what you think.
Regards, SSP
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