Smallest - a Savage Model 10 (I think, it is in the safe right now) in .204 Ruger; Largest - depends on how that is measured, but I have several candidates, including, in the high velocity/large caliber area, a very early Weatherby MkV (German, 1959) in .300 Weatherby Magnum; in the large caliber/heavy bullet category, several .45-70s, including an original 1881 Marlin and an 1895 Marlin (modern, first year or two of production, as I recall), and three trap-door Springfields in .50-70. Sorry, no .458 Winchesters or .600 Nitro Express rifles, though I would love to have a nice .600 double rifle!
