Hi, just bought a '66 t-bolt and am told it is the T2 grade. Besides barrel length what's the difference? It has a custom (?) oiled walnut stock with checkering but since I think that's custom that doesn't help.
per the Standard Catalog of Browning Firearms FN T-bolts manufactured from 1965-1974 FN T1 had a 22 inch barrel and plain walnut stock. FN T2 had a 24 inch barrel and select checkered walnut stock. Many FN t-bolts were effected by salt wood and the authors consider the T2 a sleeper collectible. I think thru the Browning lines the different grades are about wood and decoration (engraving). The basic firearm is the same. Bill