Hello: I just got a two trigger type 6 in .32RF only. I started some research for a comparison with my old type 1 on and have a dilemma. The Woods-Littlefield-Rowe compendium lists .32, .38 and .44RF (as well as .32 and .38 CF) My rifle slugs out at .415/.411. Any ideas if there were .41 RFs made? I see some exotic calibers listed but this is a plain old Kittridge era, but not so marked, gun that I have assumed for years was in .44. Thank you kindly, Wayne

LARRY:
Slugging the Wesson barrels can be mis-leading, if you don't remember that they are 5-groove barrels.  There were no "SAAMI" specs back in those days, and many makers had their own ideas about chamber dimensions.   
One of my Wessons is believed to be a 40-40 Wesson caliber.  Very similar to the 44 Henry chamber, but made for an inside-lubricated bullet -- .440 chamber, .425 bullet.
If you are good at trigonometry, you can machine a v-block and can then mike the slugs, directly.   The late O.H. McKagan used to offer a free service of measuring slugs of odd-grooved barrels.

CHRIS