Yours is a 1 1/16 - 20. There are only 2 shank diameters on the 10 110 pattern actions. Northland Shooters Supply. Jim is a sponsor here. I like Shilen but many many Savage guys swear by Criterion. Right now the Bartlien barrels are kicking rear in a lot of competitions. Talk to Devin at Sin Arms or Jim at Apache Gun Works for a Bartlien or Krieger. I think Pac nor may make a prefit also. I have a fine Pacnor on a Remington.