As you well know, your LC was reproofed (the 'Crown over R') when imported into the UK. Interesting that it has the BAR stamp, as the Proof House converted from Tons to BAR in 1989. 950 BAR is equivalent to 3 1/2 TONS with a CIP service pressure of 10,427 psi. The maximum SAAMI (US) pressure for 20g is 12,000. As Researcher said, the barrels and action can handle 10,500 psi, but the recoil would be detrimental to the graceful and elegant stock, and your shoulder I would very much like to add pics to the 'LC Smith Design and Engineering' album if you would be so kind http://www.picturetrail.com/gallery/view?p=999&gid=15234180