I am probably going to get a levergun in .44 Magnum or .45 Colt but would like to ask about bore diameters for popular models. First off, I like the '92 and it's likely gonna be either a '92 or a Henry Big Boy. I have read where the Marlin has varied bore diameter of .430" or .432" depending on what kind of rifling, and now I am reading where the Rossi has a .454" groove diameter in .45 Colt and that they prefer .454" boolits so this is somewhat confusing as I would like to use the same .432" and .452" cast boolits and loads that I use in my Ruger pistols of those calibers.
What are the nominal groove diameters for Rossi, Winchester, Marlin, and Henry in both .44 and .45 caliber?