Calibers for a lever action deer rifle: .35 Rem, .30-.30, .444, .450, .45-70, .308, yes, any of the above would do fine, although for most deer I have seen the .450 Ruger and .45-70 might be a bit much.

I would add the .44 Remington Magnum to the list. I have a Winchester Model 94, 20-inch barrel, in that caliber and " deerly" love it. I can pick off veggie cans at 50 yards at will as fast as I can work the lever.

Of course, there is no real need for anything other than the 30-30 in a lever action deer rifle.