Andrew, out of the three you listed, I would have picked the 30-30 as well for your hunting situation, assuming you bear was not in season as well, or you didn't have a bear tag, in which case I would have taken the 45-70. Firearms season for deer opens on Monday here and I would love to be packing my Savage in 7mm Rem Mag or my 45-70 handy (bear season is open as well and I have a tag), but "firearms" season for deer here is shotgun or muzzle-loader only, so if I get out it will be with my Mossberg 500. Deer firearms ends Friday then its back to one of the rifles if I'm going specifically for bear, or the crossbow if I may run into either one.
Jim